64920700 has 36 divisors (see below), whose sum is σ = 151717720. Its totient is φ = 23970240.

The previous prime is 64920689. The next prime is 64920703. The reversal of 64920700 is 702946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64920703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23670 + ... + 26269.

Almost surely, 2^64920700 is an apocalyptic number.

It is an amenable number.

64920700 is an abundant number, since it is smaller than the sum of its proper divisors (86797020).

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

64920700 is a wasteful number, since it uses less digits than its factorization.

64920700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49966 (or 49959 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 64920700 is about 8057.3382701733. The cubic root of 64920700 is about 401.9089998057.

The spelling of 64920700 in words is "sixty-four million, nine hundred twenty thousand, seven hundred".