64198674 has 48 divisors (see below), whose sum is σ = 142545312. Its totient is φ = 20876544.

The previous prime is 64198669. The next prime is 64198703. The reversal of 64198674 is 47689146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144697 + ... + 145139.

It is an arithmetic number, because the mean of its divisors is an integer number (2969694).

Almost surely, 2^64198674 is an apocalyptic number.

64198674 is an abundant number, since it is smaller than the sum of its proper divisors (78346638).

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

64198674 is a wasteful number, since it uses less digits than its factorization.

64198674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631 (or 628 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 64198674 is about 8012.4075033663. The cubic root of 64198674 is about 400.4134766121.

The spelling of 64198674 in words is "sixty-four million, one hundred ninety-eight thousand, six hundred seventy-four".