861677 has 8 divisors (see below), whose sum is σ = 913440. Its totient is φ = 811440.

The previous prime is 861659. The next prime is 861691. The reversal of 861677 is 776168.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 861677 - 2⁶ = 861613 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 (861617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 902 + ... + 1592.

It is an arithmetic number, because the mean of its divisors is an integer number (114180).

2⁸⁶¹⁶⁷⁷ is an apocalyptic number.

It is an amenable number.

861677 is a deficient number, since it is larger than the sum of its proper divisors (51763).

861677 is a wasteful number, since it uses less digits than its factorization.

861677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763.

The product of its digits is 14112, while the sum is 35.

The square root of 861677 is about 928.2655869954. The cubic root of 861677 is about 95.1586269508.

The spelling of 861677 in words is "eight hundred sixty-one thousand, six hundred seventy-seven".