765997678322 has 6 divisors (see below), whose sum is σ = 1148998374093. Its totient is φ = 382998220292.

The previous prime is 765997678223. The next prime is 765997678331. The reversal of 765997678322 is 223876799567.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 672923261761 + 93074416561 = 820319^2 + 305081^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=618869.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 928304 + ... + 1547172.

Almost surely, 2^765997678322 is an apocalyptic number.

765997678322 is a deficient number, since it is larger than the sum of its proper divisors (383000695771).

765997678322 is an frugal number, since it uses more digits than its factorization.

765997678322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237740 (or 618871 counting only the distinct ones).

The product of its digits is 480090240, while the sum is 71.

The spelling of 765997678322 in words is "seven hundred sixty-five billion, nine hundred ninety-seven million, six hundred seventy-eight thousand, three hundred twenty-two".