779005997 has 16 divisors (see below), whose sum is σ = 976128000. Its totient is φ = 603955440.

The previous prime is 779005993. The next prime is 779005999. The reversal of 779005997 is 799500977.

It is not a de Polignac number, because 779005997 - 2² = 779005993 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779005993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10097 + ... + 40742.

It is an arithmetic number, because the mean of its divisors is an integer number (61008000).

Almost surely, 2^779005997 is an apocalyptic number.

779005997 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

779005997 is a deficient number, since it is larger than the sum of its proper divisors (197122003).

779005997 is a wasteful number, since it uses less digits than its factorization.

779005997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51056.

The product of its (nonzero) digits is 1250235, while the sum is 53.

The square root of 779005997 is about 27910.6789061105. The cubic root of 779005997 is about 920.1252180696.

The spelling of 779005997 in words is "seven hundred seventy-nine million, five thousand, nine hundred ninety-seven".