856361560 has 32 divisors (see below), whose sum is σ = 1948471200. Its totient is φ = 338694400.

The previous prime is 856361543. The next prime is 856361563. The reversal of 856361560 is 65163658.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856361563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116716 + ... + 123835.

It is an arithmetic number, because the mean of its divisors is an integer number (60889725).

Almost surely, 2^856361560 is an apocalyptic number.

It is an amenable number.

856361560 is an abundant number, since it is smaller than the sum of its proper divisors (1092109640).

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

856361560 is a wasteful number, since it uses less digits than its factorization.

856361560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240651 (or 240647 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 856361560 is about 29263.6559575184. The cubic root of 856361560 is about 949.6255440197.

The spelling of 856361560 in words is "eight hundred fifty-six million, three hundred sixty-one thousand, five hundred sixty".