64555164 has 48 divisors (see below), whose sum is σ = 167856640. Its totient is φ = 21455280.

The previous prime is 64555163. The next prime is 64555187. The reversal of 64555164 is 46155546.

64555164 is a `hidden beast` number, since 6 + 45 + 551 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64555163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49359 + ... + 50649.

Almost surely, 2^64555164 is an apocalyptic number.

It is an amenable number.

64555164 is an abundant number, since it is smaller than the sum of its proper divisors (103301476).

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

64555164 is a wasteful number, since it uses less digits than its factorization.

64555164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767 (or 1759 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 64555164 is about 8034.6228287332. The cubic root of 64555164 is about 401.1532634298.

The spelling of 64555164 in words is "sixty-four million, five hundred fifty-five thousand, one hundred sixty-four".