677287720 has 16 divisors (see below), whose sum is σ = 1523897460. Its totient is φ = 270915072.

The previous prime is 677287691. The next prime is 677287729. The reversal of 677287720 is 27782776.

It can be written as a sum of positive squares in 2 ways, for example, as 595457604 + 81830116 = 24402^2 + 9046^2 .

It is not an unprimeable number, because it can be changed into a prime (677287729) 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, 8466057 + ... + 8466136.

Almost surely, 2^677287720 is an apocalyptic number.

It is an amenable number.

677287720 is an abundant number, since it is smaller than the sum of its proper divisors (846609740).

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

677287720 is a wasteful number, since it uses less digits than its factorization.

677287720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16932204 (or 16932200 counting only the distinct ones).

The product of its (nonzero) digits is 460992, while the sum is 46.

The square root of 677287720 is about 26024.7520641408. The cubic root of 677287720 is about 878.1952164062.

The spelling of 677287720 in words is "six hundred seventy-seven million, two hundred eighty-seven thousand, seven hundred twenty".