647891675 has 48 divisors (see below), whose sum is σ = 879845472. Its totient is φ = 471398400.

The previous prime is 647891633. The next prime is 647891689. The reversal of 647891675 is 576198746.

It is not a de Polignac number, because 647891675 - 2¹⁶ = 647826139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1736789 + ... + 1737161.

It is an arithmetic number, because the mean of its divisors is an integer number (18330114).

Almost surely, 2^647891675 is an apocalyptic number.

647891675 is a deficient number, since it is larger than the sum of its proper divisors (231953797).

647891675 is a wasteful number, since it uses less digits than its factorization.

647891675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 523 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 53.

The square root of 647891675 is about 25453.7163298407. The cubic root of 647891675 is about 865.3015198415.

The spelling of 647891675 in words is "six hundred forty-seven million, eight hundred ninety-one thousand, six hundred seventy-five".