642337296 has 20 divisors (see below), whose sum is σ = 1659371472. Its totient is φ = 214112416.

The previous prime is 642337273. The next prime is 642337301. The reversal of 642337296 is 692733246.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6690966 + ... + 6691061.

Almost surely, 2^642337296 is an apocalyptic number.

It is an amenable number.

642337296 is an abundant number, since it is smaller than the sum of its proper divisors (1017034176).

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

642337296 is a wasteful number, since it uses less digits than its factorization.

642337296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13382038 (or 13382032 counting only the distinct ones).

The product of its digits is 326592, while the sum is 42.

The square root of 642337296 is about 25344.3740502700. The cubic root of 642337296 is about 862.8216747635.

The spelling of 642337296 in words is "six hundred forty-two million, three hundred thirty-seven thousand, two hundred ninety-six".