64267380 has 72 divisors (see below), whose sum is σ = 195747552. Its totient is φ = 17067456.

The previous prime is 64267331. The next prime is 64267387. The reversal of 64267380 is 8376246.

64267380 is a `hidden beast` number, since 642 + 6 + 7 + 3 + 8 + 0 = 666.

64267380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64267380² = 8260592264128800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64267387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54679 + ... + 55841.

It is an arithmetic number, because the mean of its divisors is an integer number (2718716).

Almost surely, 2^64267380 is an apocalyptic number.

64267380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64267380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97873776).

64267380 is an abundant number, since it is smaller than the sum of its proper divisors (131480172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64267380 is a wasteful number, since it uses less digits than its factorization.

64267380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485 (or 1480 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 64267380 is about 8016.6938322478. The cubic root of 64267380 is about 400.5562677236.

The spelling of 64267380 in words is "sixty-four million, two hundred sixty-seven thousand, three hundred eighty".