643474602 has 12 divisors (see below), whose sum is σ = 1394195010. Its totient is φ = 214491528.

The previous prime is 643474589. The next prime is 643474613. The reversal of 643474602 is 206474346.

643474602 is a `hidden beast` number, since 6 + 4 + 3 + 47 + 4 + 602 = 666.

It can be written as a sum of positive squares in only one way, i.e., 633982041 + 9492561 = 25179^2 + 3081^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17874277 + ... + 17874312.

Almost surely, 2^643474602 is an apocalyptic number.

643474602 is an abundant number, since it is smaller than the sum of its proper divisors (750720408).

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

643474602 is a wasteful number, since it uses less digits than its factorization.

643474602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35748597 (or 35748594 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

The square root of 643474602 is about 25366.8011779176. The cubic root of 643474602 is about 863.3306045176.

The spelling of 643474602 in words is "six hundred forty-three million, four hundred seventy-four thousand, six hundred two".