677778908 has 6 divisors (see below), whose sum is σ = 1186113096. Its totient is φ = 338889452.

The previous prime is 677778889. The next prime is 677778911. The reversal of 677778908 is 809877776.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84722360 + ... + 84722367.

It is an arithmetic number, because the mean of its divisors is an integer number (197685516).

Almost surely, 2^677778908 is an apocalyptic number.

It is an amenable number.

677778908 is a deficient number, since it is larger than the sum of its proper divisors (508334188).

677778908 is a wasteful number, since it uses less digits than its factorization.

677778908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169444731 (or 169444729 counting only the distinct ones).

The product of its (nonzero) digits is 8297856, while the sum is 59.

The square root of 677778908 is about 26034.1872928655. The cubic root of 677778908 is about 878.4074623510.

The spelling of 677778908 in words is "six hundred seventy-seven million, seven hundred seventy-eight thousand, nine hundred eight".