64064080 has 20 divisors (see below), whose sum is σ = 148949172. Its totient is φ = 25625600.

The previous prime is 64064071. The next prime is 64064089. The reversal of 64064080 is 8046046.

It is an interprime number because it is at equal distance from previous prime (64064071) and next prime (64064089).

It can be written as a sum of positive squares in 2 ways, for example, as 23001616 + 41062464 = 4796^2 + 6408^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64064089) 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 3 ways as a sum of consecutive naturals, for example, 400321 + ... + 400480.

Almost surely, 2^64064080 is an apocalyptic number.

It is an amenable number.

64064080 is an abundant number, since it is smaller than the sum of its proper divisors (84885092).

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

64064080 is a wasteful number, since it uses less digits than its factorization.

64064080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800814 (or 800808 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 64064080 is about 8004.0039980000. The cubic root of 64064080 is about 400.1334554691.

The spelling of 64064080 in words is "sixty-four million, sixty-four thousand, eighty".