64641160 has 16 divisors (see below), whose sum is σ = 145442700. Its totient is φ = 25856448.

The previous prime is 64641149. The next prime is 64641163. The reversal of 64641160 is 6114646.

It can be written as a sum of positive squares in 2 ways, for example, as 64288324 + 352836 = 8018^2 + 594^2 .

It is a super-2 number, since 2×64641160² = 8356959132291200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64641163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 807975 + ... + 808054.

Almost surely, 2^64641160 is an apocalyptic number.

It is an amenable number.

64641160 is an abundant number, since it is smaller than the sum of its proper divisors (80801540).

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

64641160 is a wasteful number, since it uses less digits than its factorization.

64641160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616040 (or 1616036 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 64641160 is about 8039.9726367694. The cubic root of 64641160 is about 401.3313140911.

The spelling of 64641160 in words is "sixty-four million, six hundred forty-one thousand, one hundred sixty".