856164788 has 48 divisors (see below), whose sum is σ = 1608598656. Its totient is φ = 397731840.

The previous prime is 856164733. The next prime is 856164817. The reversal of 856164788 is 887461658.

It is a super-2 number, since 2×856164788² = 1466036288422169888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1331195 + ... + 1331837.

It is an arithmetic number, because the mean of its divisors is an integer number (33512472).

Almost surely, 2^856164788 is an apocalyptic number.

It is an amenable number.

856164788 is a deficient number, since it is larger than the sum of its proper divisors (752433868).

856164788 is a wasteful number, since it uses less digits than its factorization.

856164788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064 (or 1062 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 53.

The square root of 856164788 is about 29260.2937100775. The cubic root of 856164788 is about 949.5528044822.

The spelling of 856164788 in words is "eight hundred fifty-six million, one hundred sixty-four thousand, seven hundred eighty-eight".