85720706876 has 24 divisors (see below), whose sum is σ = 177353188320. Its totient is φ = 35470636992.

The previous prime is 85720706843. The next prime is 85720706893. The reversal of 85720706876 is 67860702758.

It is a happy number.

It is a super-2 number, since 2×85720706876² (a number of 23 digits) 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 7 ways as a sum of consecutive naturals, for example, 52782875 + ... + 52784498.

It is an arithmetic number, because the mean of its divisors is an integer number (7389716180).

Almost surely, 2^85720706876 is an apocalyptic number.

It is an amenable number.

85720706876 is an abundant number, since it is smaller than the sum of its proper divisors (91632481444).

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

85720706876 is a wasteful number, since it uses less digits than its factorization.

85720706876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105567413 (or 105567411 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 56.

The spelling of 85720706876 in words is "eighty-five billion, seven hundred twenty million, seven hundred six thousand, eight hundred seventy-six".