677724890 has 16 divisors (see below), whose sum is σ = 1291664232. Its totient is φ = 255143424.

The previous prime is 677724871. The next prime is 677724937. The reversal of 677724890 is 98427776.

It can be written as a sum of positive squares in 4 ways, for example, as 675948001 + 1776889 = 25999^2 + 1333^2 .

It is a super-2 number, since 2×677724890² = 918622053051024200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1993139 + ... + 1993478.

Almost surely, 2^677724890 is an apocalyptic number.

677724890 is a deficient number, since it is larger than the sum of its proper divisors (613939342).

677724890 is a wasteful number, since it uses less digits than its factorization.

677724890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986641.

The product of its (nonzero) digits is 1185408, while the sum is 50.

The square root of 677724890 is about 26033.1498286320. The cubic root of 677724890 is about 878.3841257957.

The spelling of 677724890 in words is "six hundred seventy-seven million, seven hundred twenty-four thousand, eight hundred ninety".