856715485 has 16 divisors (see below), whose sum is σ = 1033845120. Its totient is φ = 681528640.

The previous prime is 856715471. The next prime is 856715591. The reversal of 856715485 is 584517658.

It is not a de Polignac number, because 856715485 - 2¹¹ = 856713437 is a prime.

It is a super-2 number, since 2×856715485² = 1467922844477570450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1020696 + ... + 1021534.

It is an arithmetic number, because the mean of its divisors is an integer number (64615320).

Almost surely, 2^856715485 is an apocalyptic number.

It is an amenable number.

856715485 is a deficient number, since it is larger than the sum of its proper divisors (177129635).

856715485 is a wasteful number, since it uses less digits than its factorization.

856715485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748.

The product of its digits is 1344000, while the sum is 49.

The square root of 856715485 is about 29269.7025095917. The cubic root of 856715485 is about 949.7563493342.

The spelling of 856715485 in words is "eight hundred fifty-six million, seven hundred fifteen thousand, four hundred eighty-five".