768959666 has 8 divisors (see below), whose sum is σ = 1155511980. Its totient is φ = 383789008.

The previous prime is 768959593. The next prime is 768959699. The reversal of 768959666 is 666959867.

It can be written as a sum of positive squares in 2 ways, for example, as 760380625 + 8579041 = 27575^2 + 2929^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 768959599 and 768959608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344021 + ... + 346248.

Almost surely, 2^768959666 is an apocalyptic number.

768959666 is a deficient number, since it is larger than the sum of its proper divisors (386552314).

768959666 is a wasteful number, since it uses less digits than its factorization.

768959666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690828.

The product of its digits is 29393280, while the sum is 62.

The square root of 768959666 is about 27730.1219975679. The cubic root of 768959666 is about 916.1526739345.

The spelling of 768959666 in words is "seven hundred sixty-eight million, nine hundred fifty-nine thousand, six hundred sixty-six".