64697982 has 16 divisors (see below), whose sum is σ = 129476880. Its totient is φ = 21552512.

The previous prime is 64697981. The next prime is 64697987. The reversal of 64697982 is 28979646.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64697981) 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, 13588 + ... + 17720.

It is an arithmetic number, because the mean of its divisors is an integer number (8092305).

Almost surely, 2^64697982 is an apocalyptic number.

64697982 is an abundant number, since it is smaller than the sum of its proper divisors (64778898).

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

64697982 is a wasteful number, since it uses less digits than its factorization.

64697982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6747.

The product of its digits is 1306368, while the sum is 51.

The square root of 64697982 is about 8043.5055790370. The cubic root of 64697982 is about 401.4488747351.

The spelling of 64697982 in words is "sixty-four million, six hundred ninety-seven thousand, nine hundred eighty-two".