677977679236 has 81 divisors (see below), whose sum is σ = 1412651307333. Its totient is φ = 284367351840.

The previous prime is 677977679209. The next prime is 677977679333. The reversal of 677977679236 is 632976779776.

The square root of 677977679236 is 823394.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 100292556100 + 577685123136 = 316690^2 + 760056^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 235489245 + ... + 235492123.

Almost surely, 2^677977679236 is an apocalyptic number.

677977679236 is the 823394-th square number.

It is an amenable number.

677977679236 is an abundant number, since it is smaller than the sum of its proper divisors (734673628097).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

677977679236 is a wasteful number, since it uses less digits than its factorization.

677977679236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5810 (or 2905 counting only the distinct ones).

The product of its digits is 1764331632, while the sum is 76.

The spelling of 677977679236 in words is "six hundred seventy-seven billion, nine hundred seventy-seven million, six hundred seventy-nine thousand, two hundred thirty-six".