677561912 has 8 divisors (see below), whose sum is σ = 1270428600. Its totient is φ = 338780952.

The previous prime is 677561861. The next prime is 677561921. The reversal of 677561912 is 219165776.

It is a tau number, because it is divible by the number of its divisors (8).

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, 42347612 + ... + 42347627.

It is an arithmetic number, because the mean of its divisors is an integer number (158803575).

Almost surely, 2^677561912 is an apocalyptic number.

It is an amenable number.

677561912 is a deficient number, since it is larger than the sum of its proper divisors (592866688).

677561912 is a wasteful number, since it uses less digits than its factorization.

677561912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84695245 (or 84695241 counting only the distinct ones).

The product of its digits is 158760, while the sum is 44.

The square root of 677561912 is about 26030.0194391015. The cubic root of 677561912 is about 878.3137094330.

The spelling of 677561912 in words is "six hundred seventy-seven million, five hundred sixty-one thousand, nine hundred twelve".