64998884 has 12 divisors (see below), whose sum is σ = 115676400. Its totient is φ = 31948488.

The previous prime is 64998883. The next prime is 64998887. The reversal of 64998884 is 48889946.

It is not an unprimeable number, because it can be changed into a prime (64998883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137474 + ... + 137945.

It is an arithmetic number, because the mean of its divisors is an integer number (9639700).

Almost surely, 2^64998884 is an apocalyptic number.

It is an amenable number.

64998884 is a deficient number, since it is larger than the sum of its proper divisors (50677516).

64998884 is a wasteful number, since it uses less digits than its factorization.

64998884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275482 (or 275480 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 56.

The square root of 64998884 is about 8062.1885366196. The cubic root of 64998884 is about 402.0702747535.

The spelling of 64998884 in words is "sixty-four million, nine hundred ninety-eight thousand, eight hundred eighty-four".