875686079961 has 81 divisors (see below), whose sum is σ = 1617713297109. Its totient is φ = 454789566000.

The previous prime is 875686079833. The next prime is 875686079963. The reversal of 875686079961 is 169970686578.

The square root of 875686079961 is 935781.

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

875686079961 is a `hidden beast` number, since 8 + 7 + 5 + 6 + 8 + 607 + 9 + 9 + 6 + 1 = 666.

It is not a de Polignac number, because 875686079961 - 2⁷ = 875686079833 is a prime.

It is a super-2 number, since 2×875686079961² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 875686079961.

It is not an unprimeable number, because it can be changed into a prime (875686079963) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 216163386 + ... + 216167436.

Almost surely, 2^875686079961 is an apocalyptic number.

875686079961 is the 935781-st square number.

875686079961 is the 467891-st centered octagonal number.

It is an amenable number.

875686079961 is a deficient number, since it is larger than the sum of its proper divisors (742027217148).

875686079961 is an equidigital number, since it uses as much as digits as its factorization.

875686079961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8144 (or 4072 counting only the distinct ones).

The product of its (nonzero) digits is 274337280, while the sum is 72.

The spelling of 875686079961 in words is "eight hundred seventy-five billion, six hundred eighty-six million, seventy-nine thousand, nine hundred sixty-one".