647268472 has 16 divisors (see below), whose sum is σ = 1285018560. Its totient is φ = 304596864.

The previous prime is 647268467. The next prime is 647268521. The reversal of 647268472 is 274862746.

It is a congruent number.

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, 2379528 + ... + 2379799.

It is an arithmetic number, because the mean of its divisors is an integer number (80313660).

Almost surely, 2^647268472 is an apocalyptic number.

It is an amenable number.

647268472 is a deficient number, since it is larger than the sum of its proper divisors (637750088).

647268472 is a wasteful number, since it uses less digits than its factorization.

647268472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759350 (or 4759346 counting only the distinct ones).

The product of its digits is 903168, while the sum is 46.

The square root of 647268472 is about 25441.4714983234. The cubic root of 647268472 is about 865.0239881082.

The spelling of 647268472 in words is "six hundred forty-seven million, two hundred sixty-eight thousand, four hundred seventy-two".