647560 has 16 divisors (see below), whose sum is σ = 1457100. Its totient is φ = 259008.

The previous prime is 647557. The next prime is 647579. The reversal of 647560 is 65746.

It can be written as a sum of positive squares in 2 ways, for example, as 643204 + 4356 = 802^2 + 66^2 .

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, 8055 + ... + 8134.

2⁶⁴⁷⁵⁶⁰ is an apocalyptic number.

It is an amenable number.

647560 is an abundant number, since it is smaller than the sum of its proper divisors (809540).

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

647560 is a wasteful number, since it uses less digits than its factorization.

647560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16200 (or 16196 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 647560 is about 804.7111282939. The cubic root of 647560 is about 86.5153836784.

The spelling of 647560 in words is "six hundred forty-seven thousand, five hundred sixty".