64198172 has 12 divisors (see below), whose sum is σ = 112503216. Its totient is φ = 32054400.

The previous prime is 64198159. The next prime is 64198177. The reversal of 64198172 is 27189146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64198177) 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, 7829 + ... + 13772.

It is an arithmetic number, because the mean of its divisors is an integer number (9375268).

Almost surely, 2^64198172 is an apocalyptic number.

It is an amenable number.

64198172 is a deficient number, since it is larger than the sum of its proper divisors (48305044).

64198172 is a wasteful number, since it uses less digits than its factorization.

64198172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22348 (or 22346 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 64198172 is about 8012.3761768903. The cubic root of 64198172 is about 400.4124329349.

The spelling of 64198172 in words is "sixty-four million, one hundred ninety-eight thousand, one hundred seventy-two".