64651902 has 16 divisors (see below), whose sum is σ = 147775872. Its totient is φ = 18471960.

The previous prime is 64651883. The next prime is 64651903. The reversal of 64651902 is 20915646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64651903) 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, 769624 + ... + 769707.

It is an arithmetic number, because the mean of its divisors is an integer number (9235992).

Almost surely, 2^64651902 is an apocalyptic number.

64651902 is an abundant number, since it is smaller than the sum of its proper divisors (83123970).

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

64651902 is a wasteful number, since it uses less digits than its factorization.

64651902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539343.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 64651902 is about 8040.6406461177. The cubic root of 64651902 is about 401.3535437984.

The spelling of 64651902 in words is "sixty-four million, six hundred fifty-one thousand, nine hundred two".