647109536 has 24 divisors (see below), whose sum is σ = 1301106240. Its totient is φ = 316669888.

The previous prime is 647109521. The next prime is 647109553. The reversal of 647109536 is 635901746.

It is a junction number, because it is equal to n+sod(n) for n = 647109493 and 647109502.

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, 213626 + ... + 216633.

It is an arithmetic number, because the mean of its divisors is an integer number (54212760).

Almost surely, 2^647109536 is an apocalyptic number.

It is an amenable number.

647109536 is an abundant number, since it is smaller than the sum of its proper divisors (653996704).

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

647109536 is a wasteful number, since it uses less digits than its factorization.

647109536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430316 (or 430308 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 647109536 is about 25438.3477450875. The cubic root of 647109536 is about 864.9531804434.

The spelling of 647109536 in words is "six hundred forty-seven million, one hundred nine thousand, five hundred thirty-six".