647055375 has 16 divisors (see below), whose sum is σ = 1076700768. Its totient is φ = 345096000.

The previous prime is 647055359. The next prime is 647055407. The reversal of 647055375 is 573550746.

It is not a de Polignac number, because 647055375 - 2⁴ = 647055359 is a prime.

It is a congruent number.

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, 862366 + ... + 863115.

It is an arithmetic number, because the mean of its divisors is an integer number (67293798).

Almost surely, 2^647055375 is an apocalyptic number.

647055375 is a deficient number, since it is larger than the sum of its proper divisors (429645393).

647055375 is a wasteful number, since it uses less digits than its factorization.

647055375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725499 (or 1725489 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 42.

The square root of 647055375 is about 25437.2831686090. The cubic root of 647055375 is about 864.9290484978.

The spelling of 647055375 in words is "six hundred forty-seven million, fifty-five thousand, three hundred seventy-five".