696581 has 4 divisors (see below), whose sum is σ = 706464. Its totient is φ = 686700.

The previous prime is 696569. The next prime is 696607. The reversal of 696581 is 185696.

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 696581 - 2⁶ = 696517 is a prime.

It is a super-2 number, since 2×696581² = 970450179122, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (696181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4835 + ... + 4976.

It is an arithmetic number, because the mean of its divisors is an integer number (176616).

2⁶⁹⁶⁵⁸¹ is an apocalyptic number.

It is an amenable number.

696581 is a deficient number, since it is larger than the sum of its proper divisors (9883).

696581 is an equidigital number, since it uses as much as digits as its factorization.

696581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9882.

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

The square root of 696581 is about 834.6142821687. The cubic root of 696581 is about 88.6456049496.

The spelling of 696581 in words is "six hundred ninety-six thousand, five hundred eighty-one".