64985496 has 32 divisors (see below), whose sum is σ = 165130800. Its totient is φ = 21306240.

The previous prime is 64985489. The next prime is 64985497. The reversal of 64985496 is 69458946.

It is a super-2 number, since 2×64985496² = 8446229380732032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64985497) 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, 20731 + ... + 23658.

Almost surely, 2^64985496 is an apocalyptic number.

It is an amenable number.

64985496 is an abundant number, since it is smaller than the sum of its proper divisors (100145304).

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

64985496 is a wasteful number, since it uses less digits than its factorization.

64985496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44459 (or 44455 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 51.

The square root of 64985496 is about 8061.3581982195. The cubic root of 64985496 is about 402.0426676822.

The spelling of 64985496 in words is "sixty-four million, nine hundred eighty-five thousand, four hundred ninety-six".