77768323 has 4 divisors (see below), whose sum is σ = 78380800. Its totient is φ = 77155848.

The previous prime is 77768297. The next prime is 77768357. The reversal of 77768323 is 32386777.

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

It is a cyclic number.

It is not a de Polignac number, because 77768323 - 2⁵ = 77768291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77768323.

It is not an unprimeable number, because it can be changed into a prime (77768363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306048 + ... + 306301.

It is an arithmetic number, because the mean of its divisors is an integer number (19595200).

Almost surely, 2^77768323 is an apocalyptic number.

77768323 is a deficient number, since it is larger than the sum of its proper divisors (612477).

77768323 is a wasteful number, since it uses less digits than its factorization.

77768323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612476.

The product of its digits is 296352, while the sum is 43.

The square root of 77768323 is about 8818.6349850756. The cubic root of 77768323 is about 426.8424244024.

The spelling of 77768323 in words is "seventy-seven million, seven hundred sixty-eight thousand, three hundred twenty-three".