696561 has 4 divisors (see below), whose sum is σ = 928752. Its totient is φ = 464372.

The previous prime is 696547. The next prime is 696569. The reversal of 696561 is 165696.

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 696561 - 2⁶ = 696497 is a prime.

It is an Ulam number.

It is a D-number.

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

It is a Curzon number.

696561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (696569) 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, 116091 + ... + 116096.

It is an arithmetic number, because the mean of its divisors is an integer number (232188).

2⁶⁹⁶⁵⁶¹ is an apocalyptic number.

It is an amenable number.

696561 is a deficient number, since it is larger than the sum of its proper divisors (232191).

696561 is a wasteful number, since it uses less digits than its factorization.

696561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232190.

The product of its digits is 9720, while the sum is 33.

The square root of 696561 is about 834.6023005001. The cubic root of 696561 is about 88.6447565539.

The spelling of 696561 in words is "six hundred ninety-six thousand, five hundred sixty-one".