777639068 has 12 divisors (see below), whose sum is σ = 1432493160. Its totient is φ = 368355312.

The previous prime is 777639067. The next prime is 777639091. The reversal of 777639068 is 860936777.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (777639067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5115971 + ... + 5116122.

It is an arithmetic number, because the mean of its divisors is an integer number (119374430).

Almost surely, 2^777639068 is an apocalyptic number.

It is an amenable number.

777639068 is a deficient number, since it is larger than the sum of its proper divisors (654854092).

777639068 is a wasteful number, since it uses less digits than its factorization.

777639068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10232116 (or 10232114 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 53.

The square root of 777639068 is about 27886.1805918272. The cubic root of 777639068 is about 919.5867189111.

The spelling of 777639068 in words is "seven hundred seventy-seven million, six hundred thirty-nine thousand, sixty-eight".