779678023 has 4 divisors (see below), whose sum is σ = 800750440. Its totient is φ = 758605608.

The previous prime is 779677999. The next prime is 779678059. The reversal of 779678023 is 320876977.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320876977 = 4129 ⋅77713.

It is a cyclic number.

It is not a de Polignac number, because 779678023 - 2⁵ = 779677991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779678323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10536153 + ... + 10536226.

It is an arithmetic number, because the mean of its divisors is an integer number (200187610).

Almost surely, 2^779678023 is an apocalyptic number.

779678023 is a deficient number, since it is larger than the sum of its proper divisors (21072417).

779678023 is a wasteful number, since it uses less digits than its factorization.

779678023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21072416.

The product of its (nonzero) digits is 889056, while the sum is 49.

The square root of 779678023 is about 27922.7151795809. The cubic root of 779678023 is about 920.3897305154.

The spelling of 779678023 in words is "seven hundred seventy-nine million, six hundred seventy-eight thousand, twenty-three".