677725 has 6 divisors (see below), whose sum is σ = 840410. Its totient is φ = 542160.

The previous prime is 677717. The next prime is 677737. The reversal of 677725 is 527776.

It can be written as a sum of positive squares in 3 ways, for example, as 15129 + 662596 = 123^2 + 814^2 .

It is not a de Polignac number, because 677725 - 2³ = 677717 is a prime.

It is a super-2 number, since 2×677725² = 918622351250, which contains 22 as substring.

677725 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13530 + ... + 13579.

2⁶⁷⁷⁷²⁵ is an apocalyptic number.

It is an amenable number.

677725 is a deficient number, since it is larger than the sum of its proper divisors (162685).

677725 is a wasteful number, since it uses less digits than its factorization.

677725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27119 (or 27114 counting only the distinct ones).

The product of its digits is 20580, while the sum is 34.

The square root of 677725 is about 823.2405480781. The cubic root of 677725 is about 87.8384173319.

The spelling of 677725 in words is "six hundred seventy-seven thousand, seven hundred twenty-five".