861695 has 16 divisors (see below), whose sum is σ = 1105920. Its totient is φ = 643104.

The previous prime is 861691. The next prime is 861701. The reversal of 861695 is 596168.

It is a cyclic number.

It is not a de Polignac number, because 861695 - 2² = 861691 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6722 + ... + 6848.

It is an arithmetic number, because the mean of its divisors is an integer number (69120).

2⁸⁶¹⁶⁹⁵ is an apocalyptic number.

861695 is a deficient number, since it is larger than the sum of its proper divisors (244225).

861695 is a wasteful number, since it uses less digits than its factorization.

861695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214.

The product of its digits is 12960, while the sum is 35.

The square root of 861695 is about 928.2752824459. The cubic root of 861695 is about 95.1592895515.

The spelling of 861695 in words is "eight hundred sixty-one thousand, six hundred ninety-five".