768959665 has 4 divisors (see below), whose sum is σ = 922751604. Its totient is φ = 615167728.

The previous prime is 768959593. The next prime is 768959699. The reversal of 768959665 is 566959867.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 151486864 + 617472801 = 12308^2 + 24849^2 .

It is a cyclic number.

It is not a de Polignac number, because 768959665 - 2¹³ = 768951473 is a prime.

It is a Duffinian number.

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, 76895962 + ... + 76895971.

It is an arithmetic number, because the mean of its divisors is an integer number (230687901).

Almost surely, 2^768959665 is an apocalyptic number.

It is an amenable number.

768959665 is a deficient number, since it is larger than the sum of its proper divisors (153791939).

768959665 is a wasteful number, since it uses less digits than its factorization.

768959665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153791938.

The product of its digits is 24494400, while the sum is 61.

The square root of 768959665 is about 27730.1219795370. The cubic root of 768959665 is about 916.1526735374.

The spelling of 768959665 in words is "seven hundred sixty-eight million, nine hundred fifty-nine thousand, six hundred sixty-five".