64906902 has 12 divisors (see below), whose sum is σ = 140631660. Its totient is φ = 21635628.

The previous prime is 64906889. The next prime is 64906931. The reversal of 64906902 is 20960946.

64906902 is a `hidden beast` number, since 649 + 0 + 6 + 9 + 0 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1802952 + ... + 1802987.

It is an arithmetic number, because the mean of its divisors is an integer number (11719305).

Almost surely, 2^64906902 is an apocalyptic number.

64906902 is an abundant number, since it is smaller than the sum of its proper divisors (75724758).

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

64906902 is a wasteful number, since it uses less digits than its factorization.

64906902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605947 (or 3605944 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 64906902 is about 8056.4819865745. The cubic root of 64906902 is about 401.8805243821.

The spelling of 64906902 in words is "sixty-four million, nine hundred six thousand, nine hundred two".