64807380 has 144 divisors (see below), whose sum is σ = 217945728. Its totient is φ = 15456000.

The previous prime is 64807363. The next prime is 64807409. The reversal of 64807380 is 8370846.

64807380 is a `hidden beast` number, since 648 + 0 + 7 + 3 + 8 + 0 = 666.

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 an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140350 + ... + 140810.

It is an arithmetic number, because the mean of its divisors is an integer number (1513512).

Almost surely, 2^64807380 is an apocalyptic number.

64807380 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 64807380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108972864).

64807380 is an abundant number, since it is smaller than the sum of its proper divisors (153138348).

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

64807380 is a wasteful number, since it uses less digits than its factorization.

64807380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 553 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 64807380 is about 8050.3030998839. The cubic root of 64807380 is about 401.6750176654.

The spelling of 64807380 in words is "sixty-four million, eight hundred seven thousand, three hundred eighty".