731664679876 has 81 divisors (see below), whose sum is σ = 1401951250119. Its totient is φ = 333965381568.

The previous prime is 731664679873. The next prime is 731664679901. The reversal of 731664679876 is 678976466137.

The square root of 731664679876 is 855374.

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

It can be written as a sum of positive squares in 4 ways, for example, as 45550657476 + 686114022400 = 213426^2 + 828320^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (731664679873) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3714033810 + ... + 3714034006.

Almost surely, 2^731664679876 is an apocalyptic number.

731664679876 is the 855374-th square number.

It is an amenable number.

731664679876 is a deficient number, since it is larger than the sum of its proper divisors (670286570243).

731664679876 is a wasteful number, since it uses less digits than its factorization.

731664679876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758 (or 379 counting only the distinct ones).

The product of its digits is 384072192, while the sum is 70.

The spelling of 731664679876 in words is "seven hundred thirty-one billion, six hundred sixty-four million, six hundred seventy-nine thousand, eight hundred seventy-six".