712865836820 has 24 divisors (see below), whose sum is σ = 1548639577800. Its totient is φ = 275313702272.

The previous prime is 712865836783. The next prime is 712865836847. The reversal of 712865836820 is 28638568217.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 216692112004 + 496173724816 = 465502^2 + 704396^2 .

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, 614538935 + ... + 614540094.

It is an arithmetic number, because the mean of its divisors is an integer number (64526649075).

Almost surely, 2^712865836820 is an apocalyptic number.

It is an amenable number.

712865836820 is an abundant number, since it is smaller than the sum of its proper divisors (835773740980).

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

712865836820 is a wasteful number, since it uses less digits than its factorization.

712865836820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229079067 (or 1229079065 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 712865836820 in words is "seven hundred twelve billion, eight hundred sixty-five million, eight hundred thirty-six thousand, eight hundred twenty".