647071948236 has 36 divisors (see below), whose sum is σ = 1756338146808. Its totient is φ = 184877699328.

The previous prime is 647071948153. The next prime is 647071948247. The reversal of 647071948236 is 632849170746.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 550230661 + ... + 550231836.

Almost surely, 2^647071948236 is an apocalyptic number.

It is an amenable number.

647071948236 is an abundant number, since it is smaller than the sum of its proper divisors (1109266198572).

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

647071948236 is a wasteful number, since it uses less digits than its factorization.

647071948236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100462518 (or 1100462509 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 57.

The spelling of 647071948236 in words is "six hundred forty-seven billion, seventy-one million, nine hundred forty-eight thousand, two hundred thirty-six".