64752990 has 16 divisors (see below), whose sum is σ = 155407248. Its totient is φ = 17267456.

The previous prime is 64752977. The next prime is 64752991. The reversal of 64752990 is 9925746.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64752991) 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, 1079187 + ... + 1079246.

It is an arithmetic number, because the mean of its divisors is an integer number (9712953).

Almost surely, 2^64752990 is an apocalyptic number.

64752990 is an abundant number, since it is smaller than the sum of its proper divisors (90654258).

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

64752990 is a wasteful number, since it uses less digits than its factorization.

64752990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158443.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 64752990 is about 8046.9242571308. The cubic root of 64752990 is about 401.5626167895.

The spelling of 64752990 in words is "sixty-four million, seven hundred fifty-two thousand, nine hundred ninety".