64427188 has 12 divisors (see below), whose sum is σ = 128854432. Its totient is φ = 27611640.

The previous prime is 64427179. The next prime is 64427197. The reversal of 64427188 is 88172446.

It is an interprime number because it is at equal distance from previous prime (64427179) and next prime (64427197).

64427188 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 64427188.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1150458 + ... + 1150513.

Almost surely, 2^64427188 is an apocalyptic number.

It is an amenable number.

64427188 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64427188 is a wasteful number, since it uses less digits than its factorization.

64427188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300982 (or 2300980 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 64427188 is about 8026.6548449525. The cubic root of 64427188 is about 400.8880021715. Note that the first 3 decimals are identical.

The spelling of 64427188 in words is "sixty-four million, four hundred twenty-seven thousand, one hundred eighty-eight".