677865725 has 24 divisors (see below), whose sum is σ = 864908928. Its totient is φ = 526755200.

The previous prime is 677865709. The next prime is 677865737. The reversal of 677865725 is 527568776.

It is not a de Polignac number, because 677865725 - 2⁴ = 677865709 is a prime.

It is a super-2 number, since 2×677865725² = 919003882259551250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158870 + ... + 163080.

It is an arithmetic number, because the mean of its divisors is an integer number (36037872).

Almost surely, 2^677865725 is an apocalyptic number.

It is an amenable number.

677865725 is a deficient number, since it is larger than the sum of its proper divisors (187043203).

677865725 is a wasteful number, since it uses less digits than its factorization.

677865725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405 (or 4400 counting only the distinct ones).

The product of its digits is 4939200, while the sum is 53.

The square root of 677865725 is about 26035.8546047561. The cubic root of 677865725 is about 878.4449659499. Note that the first 3 decimals are identical.

The spelling of 677865725 in words is "six hundred seventy-seven million, eight hundred sixty-five thousand, seven hundred twenty-five".