677666072 has 8 divisors (see below), whose sum is σ = 1270623900. Its totient is φ = 338833032.

The previous prime is 677666047. The next prime is 677666083. The reversal of 677666072 is 270666776.

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, 42354122 + ... + 42354137.

Almost surely, 2^677666072 is an apocalyptic number.

It is an amenable number.

677666072 is a deficient number, since it is larger than the sum of its proper divisors (592957828).

677666072 is a wasteful number, since it uses less digits than its factorization.

677666072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84708265 (or 84708261 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 47.

The square root of 677666072 is about 26032.0201290641. The cubic root of 677666072 is about 878.3587141609.

The spelling of 677666072 in words is "six hundred seventy-seven million, six hundred sixty-six thousand, seventy-two".