696985 has 4 divisors (see below), whose sum is σ = 836388. Its totient is φ = 557584.

The previous prime is 696961. The next prime is 696989. The reversal of 696985 is 589696.

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

It can be written as a sum of positive squares in 2 ways, for example, as 197136 + 499849 = 444^2 + 707^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-696985 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (696989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69694 + ... + 69703.

It is an arithmetic number, because the mean of its divisors is an integer number (209097).

2⁶⁹⁶⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

696985 is a deficient number, since it is larger than the sum of its proper divisors (139403).

696985 is a wasteful number, since it uses less digits than its factorization.

696985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139402.

The product of its digits is 116640, while the sum is 43.

The square root of 696985 is about 834.8562750558. The cubic root of 696985 is about 88.6627390676.

It can be divided in two parts, 696 and 985, that added together give a square (1681 = 41²).

The spelling of 696985 in words is "six hundred ninety-six thousand, nine hundred eighty-five".