647452266 has 32 divisors (see below), whose sum is σ = 1315398528. Its totient is φ = 212412480.

The previous prime is 647452249. The next prime is 647452331. The reversal of 647452266 is 662254746.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372736 + ... + 374468.

It is an arithmetic number, because the mean of its divisors is an integer number (41106204).

Almost surely, 2^647452266 is an apocalyptic number.

647452266 is an abundant number, since it is smaller than the sum of its proper divisors (667946262).

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

647452266 is a wasteful number, since it uses less digits than its factorization.

647452266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686.

The product of its digits is 483840, while the sum is 42.

The square root of 647452266 is about 25445.0833364719. The cubic root of 647452266 is about 865.1058558235.

The spelling of 647452266 in words is "six hundred forty-seven million, four hundred fifty-two thousand, two hundred sixty-six".