768366399 has 4 divisors (see below), whose sum is σ = 1024488536. Its totient is φ = 512244264.

The previous prime is 768366371. The next prime is 768366407. The reversal of 768366399 is 993663867.

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

It is not a de Polignac number, because 768366399 - 2⁵ = 768366367 is a prime.

It is a super-2 number, since 2×768366399² = 1180773846224454402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768366349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128061064 + ... + 128061069.

It is an arithmetic number, because the mean of its divisors is an integer number (256122134).

Almost surely, 2^768366399 is an apocalyptic number.

768366399 is a deficient number, since it is larger than the sum of its proper divisors (256122137).

768366399 is a wasteful number, since it uses less digits than its factorization.

768366399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256122136.

The product of its digits is 8817984, while the sum is 57.

The square root of 768366399 is about 27719.4227753754. The cubic root of 768366399 is about 915.9170035815.

The spelling of 768366399 in words is "seven hundred sixty-eight million, three hundred sixty-six thousand, three hundred ninety-nine".