64015624 has 32 divisors (see below), whose sum is σ = 128646720. Its totient is φ = 29785536.

The previous prime is 64015621. The next prime is 64015631. The reversal of 64015624 is 42651046.

It is a super-2 number, since 2×64015624² = 8196000232218752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64015592 and 64015601.

It is not an unprimeable number, because it can be changed into a prime (64015621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2107 + ... + 11509.

It is an arithmetic number, because the mean of its divisors is an integer number (4020210).

Almost surely, 2^64015624 is an apocalyptic number.

It is an amenable number.

64015624 is an abundant number, since it is smaller than the sum of its proper divisors (64631096).

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

64015624 is a wasteful number, since it uses less digits than its factorization.

64015624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9469 (or 9465 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 64015624 is about 8000.9764404103. The cubic root of 64015624 is about 400.0325473516.

The spelling of 64015624 in words is "sixty-four million, fifteen thousand, six hundred twenty-four".