64462320 has 240 divisors, whose sum is σ = 238859712. Its totient is φ = 15482880.

The previous prime is 64462313. The next prime is 64462327. The reversal of 64462320 is 2326446.

It is an interprime number because it is at equal distance from previous prime (64462313) and next prime (64462327).

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64462327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 664512 + ... + 664608.

Almost surely, 2^64462320 is an apocalyptic number.

64462320 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 64462320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119429856).

64462320 is an abundant number, since it is smaller than the sum of its proper divisors (174397392).

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

64462320 is a wasteful number, since it uses less digits than its factorization.

64462320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 64462320 is about 8028.8430050662. The cubic root of 64462320 is about 400.9608567045.

Adding to 64462320 its reverse (2326446), we get a palindrome (66788766).

The spelling of 64462320 in words is "sixty-four million, four hundred sixty-two thousand, three hundred twenty".