780774379 has 24 divisors (see below), whose sum is σ = 995228208. Its totient is φ = 605687040.

The previous prime is 780774343. The next prime is 780774389. The reversal of 780774379 is 973477087.

It is not a de Polignac number, because 780774379 - 2²¹ = 778677227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (780774329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122479 + ... + 128695.

It is an arithmetic number, because the mean of its divisors is an integer number (41467842).

Almost surely, 2^780774379 is an apocalyptic number.

780774379 is a deficient number, since it is larger than the sum of its proper divisors (214453829).

780774379 is a wasteful number, since it uses less digits than its factorization.

780774379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6475 (or 6468 counting only the distinct ones).

The product of its (nonzero) digits is 2074464, while the sum is 52.

The square root of 780774379 is about 27942.3402563207. The cubic root of 780774379 is about 920.8209350928.

The spelling of 780774379 in words is "seven hundred eighty million, seven hundred seventy-four thousand, three hundred seventy-nine".