64265520 has 120 divisors (see below), whose sum is σ = 219079728. Its totient is φ = 15572480.

The previous prime is 64265503. The next prime is 64265549. The reversal of 64265520 is 2556246.

64265520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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, 27934 + ... + 30146.

Almost surely, 2^64265520 is an apocalyptic number.

64265520 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 64265520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109539864).

64265520 is an abundant number, since it is smaller than the sum of its proper divisors (154814208).

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

64265520 is a wasteful number, since it uses less digits than its factorization.

64265520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251 (or 2234 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 64265520 is about 8016.5778234855. The cubic root of 64265520 is about 400.5524034416.

The spelling of 64265520 in words is "sixty-four million, two hundred sixty-five thousand, five hundred twenty".