64874646 has 12 divisors (see below), whose sum is σ = 140561772. Its totient is φ = 21624876.

The previous prime is 64874633. The next prime is 64874647. The reversal of 64874646 is 64647846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64874647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1802056 + ... + 1802091.

It is an arithmetic number, because the mean of its divisors is an integer number (11713481).

Almost surely, 2^64874646 is an apocalyptic number.

64874646 is an abundant number, since it is smaller than the sum of its proper divisors (75687126).

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

64874646 is a wasteful number, since it uses less digits than its factorization.

64874646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3604155 (or 3604152 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 64874646 is about 8054.4798714753. The cubic root of 64874646 is about 401.8139407793.

The spelling of 64874646 in words is "sixty-four million, eight hundred seventy-four thousand, six hundred forty-six".