647470960 has 40 divisors (see below), whose sum is σ = 1553936256. Its totient is φ = 250632960.

The previous prime is 647470933. The next prime is 647470973. The reversal of 647470960 is 69074746.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128059 + ... + 133018.

Almost surely, 2^647470960 is an apocalyptic number.

It is an amenable number.

647470960 is an abundant number, since it is smaller than the sum of its proper divisors (906465296).

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

647470960 is a wasteful number, since it uses less digits than its factorization.

647470960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261121 (or 261115 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 647470960 is about 25445.4506739417. The cubic root of 647470960 is about 865.1141818598.

The spelling of 647470960 in words is "six hundred forty-seven million, four hundred seventy thousand, nine hundred sixty".