861707 has 24 divisors (see below), whose sum is σ = 1170432. Its totient is φ = 615600.

The previous prime is 861703. The next prime is 861719. The reversal of 861707 is 707168.

It is not a de Polignac number, because 861707 - 2² = 861703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 861707.

It is not an unprimeable number, because it can be changed into a prime (861701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27782 + ... + 27812.

It is an arithmetic number, because the mean of its divisors is an integer number (48768).

2⁸⁶¹⁷⁰⁷ is an apocalyptic number.

861707 is a deficient number, since it is larger than the sum of its proper divisors (308725).

861707 is a wasteful number, since it uses less digits than its factorization.

861707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 861707 is about 928.2817460233. The cubic root of 861707 is about 95.1597312802.

The spelling of 861707 in words is "eight hundred sixty-one thousand, seven hundred seven".