64730892 has 24 divisors (see below), whose sum is σ = 151647552. Its totient is φ = 21490000.

The previous prime is 64730881. The next prime is 64730909. The reversal of 64730892 is 29803746.

It is a self number, because there is not a number n which added to its sum of digits gives 64730892.

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, 7734 + ... + 13757.

It is an arithmetic number, because the mean of its divisors is an integer number (6318648).

Almost surely, 2^64730892 is an apocalyptic number.

It is an amenable number.

64730892 is an abundant number, since it is smaller than the sum of its proper divisors (86916660).

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

64730892 is a wasteful number, since it uses less digits than its factorization.

64730892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21749 (or 21747 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 64730892 is about 8045.5510687584. The cubic root of 64730892 is about 401.5169316902.

The spelling of 64730892 in words is "sixty-four million, seven hundred thirty thousand, eight hundred ninety-two".