856653488 has 20 divisors (see below), whose sum is σ = 1660419768. Its totient is φ = 428158080.

The previous prime is 856653451. The next prime is 856653503. The reversal of 856653488 is 884356658.

It is a super-2 number, since 2×856653488² = 1467710397005132288, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 38183 + ... + 56313.

Almost surely, 2^856653488 is an apocalyptic number.

It is an amenable number.

856653488 is a deficient number, since it is larger than the sum of its proper divisors (803766280).

856653488 is a wasteful number, since it uses less digits than its factorization.

856653488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21092 (or 21086 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 53.

The square root of 856653488 is about 29268.6434260285. The cubic root of 856653488 is about 949.7334387858.

The spelling of 856653488 in words is "eight hundred fifty-six million, six hundred fifty-three thousand, four hundred eighty-eight".