768428669 has 8 divisors (see below), whose sum is σ = 779777280. Its totient is φ = 757094800.

The previous prime is 768428663. The next prime is 768428671. The reversal of 768428669 is 966824867.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 768428669 - 2⁴ = 768428653 is a prime.

It is a super-2 number, since 2×768428669² = 1180965238682223122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768428663) 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, 144284 + ... + 149514.

It is an arithmetic number, because the mean of its divisors is an integer number (97472160).

Almost surely, 2^768428669 is an apocalyptic number.

It is an amenable number.

768428669 is a deficient number, since it is larger than the sum of its proper divisors (11348611).

768428669 is a wasteful number, since it uses less digits than its factorization.

768428669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7371.

The product of its digits is 6967296, while the sum is 56.

The square root of 768428669 is about 27720.5459722568. The cubic root of 768428669 is about 915.9417455150.

The spelling of 768428669 in words is "seven hundred sixty-eight million, four hundred twenty-eight thousand, six hundred sixty-nine".