64365290 has 32 divisors (see below), whose sum is σ = 127229184. Its totient is φ = 23250240.

The previous prime is 64365271. The next prime is 64365299. The reversal of 64365290 is 9256346.

It is a self number, because there is not a number n which added to its sum of digits gives 64365290.

It is not an unprimeable number, because it can be changed into a prime (64365299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15407 + ... + 19133.

It is an arithmetic number, because the mean of its divisors is an integer number (3975912).

Almost surely, 2^64365290 is an apocalyptic number.

64365290 is a deficient number, since it is larger than the sum of its proper divisors (62863894).

64365290 is a wasteful number, since it uses less digits than its factorization.

64365290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3902.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 64365290 is about 8022.7981402999. The cubic root of 64365290 is about 400.7595775253.

The spelling of 64365290 in words is "sixty-four million, three hundred sixty-five thousand, two hundred ninety".