64915536 has 40 divisors (see below), whose sum is σ = 191656384. Its totient is φ = 18547200.

The previous prime is 64915531. The next prime is 64915547. The reversal of 64915536 is 63551946.

It is a junction number, because it is equal to n+sod(n) for n = 64915494 and 64915503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64915531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96265 + ... + 96936.

Almost surely, 2^64915536 is an apocalyptic number.

It is an amenable number.

64915536 is an abundant number, since it is smaller than the sum of its proper divisors (126740848).

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

64915536 is a wasteful number, since it uses less digits than its factorization.

64915536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193219 (or 193213 counting only the distinct ones).

The product of its digits is 97200, while the sum is 39.

The square root of 64915536 is about 8057.0178105798. The cubic root of 64915536 is about 401.8983431477.

The spelling of 64915536 in words is "sixty-four million, nine hundred fifteen thousand, five hundred thirty-six".