768443665 has 16 divisors (see below), whose sum is σ = 1018702080. Its totient is φ = 551790720.

The previous prime is 768443659. The next prime is 768443677. The reversal of 768443665 is 566344867.

It is not a de Polignac number, because 768443665 - 2¹⁷ = 768312593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84084 + ... + 92773.

It is an arithmetic number, because the mean of its divisors is an integer number (63668880).

Almost surely, 2^768443665 is an apocalyptic number.

It is an amenable number.

768443665 is a deficient number, since it is larger than the sum of its proper divisors (250258415).

768443665 is a wasteful number, since it uses less digits than its factorization.

768443665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176952.

The product of its digits is 2903040, while the sum is 49.

The square root of 768443665 is about 27720.8164562301. The cubic root of 768443665 is about 915.9477037228.

The spelling of 768443665 in words is "seven hundred sixty-eight million, four hundred forty-three thousand, six hundred sixty-five".