647528275 has 12 divisors (see below), whose sum is σ = 804358984. Its totient is φ = 517104000.

The previous prime is 647528243. The next prime is 647528291. The reversal of 647528275 is 572825746.

It is not a de Polignac number, because 647528275 - 2⁵ = 647528243 is a prime.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 8406 + ... + 36955.

Almost surely, 2^647528275 is an apocalyptic number.

647528275 is a deficient number, since it is larger than the sum of its proper divisors (156830709).

647528275 is a wasteful number, since it uses less digits than its factorization.

647528275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45942 (or 45937 counting only the distinct ones).

The product of its digits is 940800, while the sum is 46.

The square root of 647528275 is about 25446.5768817733. The cubic root of 647528275 is about 865.1397081302.

The spelling of 647528275 in words is "six hundred forty-seven million, five hundred twenty-eight thousand, two hundred seventy-five".