677591 has 4 divisors (see below), whose sum is σ = 681912. Its totient is φ = 673272.

The previous prime is 677587. The next prime is 677627. The reversal of 677591 is 195776.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 677591 - 2² = 677587 is a prime.

It is a super-3 number, since 3×677591³ = 933306179739408213, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677531) 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, 1916 + ... + 2241.

It is an arithmetic number, because the mean of its divisors is an integer number (170478).

2⁶⁷⁷⁵⁹¹ is an apocalyptic number.

677591 is a deficient number, since it is larger than the sum of its proper divisors (4321).

677591 is a wasteful number, since it uses less digits than its factorization.

677591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4320.

The product of its digits is 13230, while the sum is 35.

The square root of 677591 is about 823.1591583649. The cubic root of 677591 is about 87.8326278038.

The spelling of 677591 in words is "six hundred seventy-seven thousand, five hundred ninety-one".