64626402 has 16 divisors (see below), whose sum is σ = 129521952. Its totient is φ = 21497280.

The previous prime is 64626379. The next prime is 64626407. The reversal of 64626402 is 20462646.

It is a self number, because there is not a number n which added to its sum of digits gives 64626402.

It is not an unprimeable number, because it can be changed into a prime (64626407) 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, 8023 + ... + 13914.

It is an arithmetic number, because the mean of its divisors is an integer number (8095122).

Almost surely, 2^64626402 is an apocalyptic number.

64626402 is an abundant number, since it is smaller than the sum of its proper divisors (64895550).

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

64626402 is a wasteful number, since it uses less digits than its factorization.

64626402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22433.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 64626402 is about 8039.0547951858. The cubic root of 64626402 is about 401.3007695777.

The spelling of 64626402 in words is "sixty-four million, six hundred twenty-six thousand, four hundred two".