64945600 has 42 divisors (see below), whose sum is σ = 159810704. Its totient is φ = 25977600.

The previous prime is 64945549. The next prime is 64945603. The reversal of 64945600 is 654946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64945603) 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 5 ways as a sum of consecutive naturals, for example, 18696 + ... + 21895.

Almost surely, 2^64945600 is an apocalyptic number.

It is an amenable number.

64945600 is an abundant number, since it is smaller than the sum of its proper divisors (94865104).

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

64945600 is a wasteful number, since it uses less digits than its factorization.

64945600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40613 (or 40598 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 64945600 is about 8058.8832973310. The cubic root of 64945600 is about 401.9603766133.

The spelling of 64945600 in words is "sixty-four million, nine hundred forty-five thousand, six hundred".