647704496 has 20 divisors (see below), whose sum is σ = 1259934984. Its totient is φ = 322560000.

The previous prime is 647704481. The next prime is 647704513. The reversal of 647704496 is 694407746.

It is a super-2 number, since 2×647704496² = 839042228277228032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 647704496.

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, 76625 + ... + 84656.

Almost surely, 2^647704496 is an apocalyptic number.

It is an amenable number.

647704496 is a deficient number, since it is larger than the sum of its proper divisors (612230488).

647704496 is a wasteful number, since it uses less digits than its factorization.

647704496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161540 (or 161534 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 47.

The square root of 647704496 is about 25450.0392141152. The cubic root of 647704496 is about 865.2181819011.

The spelling of 647704496 in words is "six hundred forty-seven million, seven hundred four thousand, four hundred ninety-six".