647334725 has 24 divisors (see below), whose sum is σ = 818772000. Its totient is φ = 507551040.

The previous prime is 647334703. The next prime is 647334763. The reversal of 647334725 is 527433746.

It is not a de Polignac number, because 647334725 - 2⁶ = 647334661 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 912671 + ... + 913379.

It is an arithmetic number, because the mean of its divisors is an integer number (34115500).

Almost surely, 2^647334725 is an apocalyptic number.

It is an amenable number.

647334725 is a deficient number, since it is larger than the sum of its proper divisors (171437275).

647334725 is a wasteful number, since it uses less digits than its factorization.

647334725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397 (or 1392 counting only the distinct ones).

The product of its digits is 423360, while the sum is 41.

The square root of 647334725 is about 25442.7735319874. The cubic root of 647334725 is about 865.0535010957.

The spelling of 647334725 in words is "six hundred forty-seven million, three hundred thirty-four thousand, seven hundred twenty-five".