779871061 has 4 divisors (see below), whose sum is σ = 805028224. Its totient is φ = 754713900.

The previous prime is 779871041. The next prime is 779871067. The reversal of 779871061 is 160178977.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 779871061 - 2²⁵ = 746316629 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 (779871067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12578535 + ... + 12578596.

It is an arithmetic number, because the mean of its divisors is an integer number (201257056).

Almost surely, 2^779871061 is an apocalyptic number.

It is an amenable number.

779871061 is a deficient number, since it is larger than the sum of its proper divisors (25157163).

779871061 is a wasteful number, since it uses less digits than its factorization.

779871061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25157162.

The product of its (nonzero) digits is 148176, while the sum is 46.

The square root of 779871061 is about 27926.1716137390. The cubic root of 779871061 is about 920.4656830354.

The spelling of 779871061 in words is "seven hundred seventy-nine million, eight hundred seventy-one thousand, sixty-one".