677917 has 4 divisors (see below), whose sum is σ = 682240. Its totient is φ = 673596.

The previous prime is 677891. The next prime is 677927. The reversal of 677917 is 719776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 677917 - 2¹⁵ = 645149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677927) 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, 1917 + ... + 2242.

It is an arithmetic number, because the mean of its divisors is an integer number (170560).

2⁶⁷⁷⁹¹⁷ is an apocalyptic number.

It is an amenable number.

677917 is a deficient number, since it is larger than the sum of its proper divisors (4323).

677917 is a wasteful number, since it uses less digits than its factorization.

677917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4322.

The product of its digits is 18522, while the sum is 37.

The square root of 677917 is about 823.3571521521. The cubic root of 677917 is about 87.8467114451.

The spelling of 677917 in words is "six hundred seventy-seven thousand, nine hundred seventeen".