64427868 has 36 divisors (see below), whose sum is σ = 163302048. Its totient is φ = 21417600.

The previous prime is 64427863. The next prime is 64427887. The reversal of 64427868 is 86872446.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64427861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12205 + ... + 16667.

It is an arithmetic number, because the mean of its divisors is an integer number (4536168).

Almost surely, 2^64427868 is an apocalyptic number.

It is an amenable number.

64427868 is an abundant number, since it is smaller than the sum of its proper divisors (98874180).

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

64427868 is a wasteful number, since it uses less digits than its factorization.

64427868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4874 (or 4869 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 64427868 is about 8026.6972037071. The cubic root of 64427868 is about 400.8894125641.

The spelling of 64427868 in words is "sixty-four million, four hundred twenty-seven thousand, eight hundred sixty-eight".