847275664 has 45 divisors (see below), whose sum is σ = 1737079203. Its totient is φ = 400293216.

The previous prime is 847275659. The next prime is 847275713. The reversal of 847275664 is 466572748.

The square root of 847275664 is 29108.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2212017 + ... + 2212399.

Almost surely, 2^847275664 is an apocalyptic number.

847275664 is the 29108-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 847275664

847275664 is an abundant number, since it is smaller than the sum of its proper divisors (889803539).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

847275664 is an equidigital number, since it uses as much as digits as its factorization.

847275664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 404 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 49.

The cubic root of 847275664 is about 946.2551238564.

Multiplying 847275664 by its sum of digits (49), we get a square (41516507536 = 203756²).

The spelling of 847275664 in words is "eight hundred forty-seven million, two hundred seventy-five thousand, six hundred sixty-four".