768329864 has 32 divisors (see below), whose sum is σ = 1484460120. Its totient is φ = 372542976.

The previous prime is 768329843. The next prime is 768329869. The reversal of 768329864 is 468923867.

It can be written as a sum of positive squares in 4 ways, for example, as 473932900 + 294396964 = 21770^2 + 17158^2 .

It is not an unprimeable number, because it can be changed into a prime (768329869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88502 + ... + 96794.

Almost surely, 2^768329864 is an apocalyptic number.

768329864 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

768329864 is a deficient number, since it is larger than the sum of its proper divisors (716130256).

768329864 is a wasteful number, since it uses less digits than its factorization.

768329864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8649 (or 8645 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 53.

The square root of 768329864 is about 27718.7637530969. The cubic root of 768329864 is about 915.9024863936.

The spelling of 768329864 in words is "seven hundred sixty-eight million, three hundred twenty-nine thousand, eight hundred sixty-four".