64879398 has 24 divisors (see below), whose sum is σ = 142155000. Its totient is φ = 21382944.

The previous prime is 64879363. The next prime is 64879403. The reversal of 64879398 is 89397846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18648 + ... + 21851.

It is an arithmetic number, because the mean of its divisors is an integer number (5923125).

Almost surely, 2^64879398 is an apocalyptic number.

64879398 is an abundant number, since it is smaller than the sum of its proper divisors (77275602).

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

64879398 is a wasteful number, since it uses less digits than its factorization.

64879398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40596 (or 40593 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 64879398 is about 8054.7748571887. The cubic root of 64879398 is about 401.8237513568.

The spelling of 64879398 in words is "sixty-four million, eight hundred seventy-nine thousand, three hundred ninety-eight".