695831 has 4 divisors (see below), whose sum is σ = 697872. Its totient is φ = 693792.

The previous prime is 695809. The next prime is 695839. The reversal of 695831 is 138596.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-695831 is a prime.

It is a super-2 number, since 2×695831² = 968361561122, which contains 22 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 (695839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371 + ... + 1236.

It is an arithmetic number, because the mean of its divisors is an integer number (174468).

2⁶⁹⁵⁸³¹ is an apocalyptic number.

695831 is a deficient number, since it is larger than the sum of its proper divisors (2041).

695831 is a wasteful number, since it uses less digits than its factorization.

695831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040.

The product of its digits is 6480, while the sum is 32.

The square root of 695831 is about 834.1648518129. The cubic root of 695831 is about 88.6137789888.

The spelling of 695831 in words is "six hundred ninety-five thousand, eight hundred thirty-one".