64770564 has 24 divisors (see below), whose sum is σ = 153203680. Its totient is φ = 21294144.

The previous prime is 64770539. The next prime is 64770569. The reversal of 64770564 is 46507746.

It is not an unprimeable number, because it can be changed into a prime (64770569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36094 + ... + 37845.

Almost surely, 2^64770564 is an apocalyptic number.

It is an amenable number.

64770564 is an abundant number, since it is smaller than the sum of its proper divisors (88433116).

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

64770564 is a wasteful number, since it uses less digits than its factorization.

64770564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74019 (or 74017 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 64770564 is about 8048.0161530653. The cubic root of 64770564 is about 401.5989416145.

The spelling of 64770564 in words is "sixty-four million, seven hundred seventy thousand, five hundred sixty-four".