64897716 has 24 divisors (see below), whose sum is σ = 163076704. Its totient is φ = 19968480.

The previous prime is 64897709. The next prime is 64897727. The reversal of 64897716 is 61779846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207850 + ... + 208161.

Almost surely, 2^64897716 is an apocalyptic number.

It is an amenable number.

64897716 is an abundant number, since it is smaller than the sum of its proper divisors (98178988).

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

64897716 is a wasteful number, since it uses less digits than its factorization.

64897716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416031 (or 416029 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The square root of 64897716 is about 8055.9118664494. The cubic root of 64897716 is about 401.8615646693.

The spelling of 64897716 in words is "sixty-four million, eight hundred ninety-seven thousand, seven hundred sixteen".