696606697 has 4 divisors (see below), whose sum is σ = 697944276. Its totient is φ = 695269120.

The previous prime is 696606643. The next prime is 696606721. The reversal of 696606697 is 796606696.

It is a happy number.

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 103002201 + 593604496 = 10149^2 + 24364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-696606697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (696606607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668008 + ... + 669049.

It is an arithmetic number, because the mean of its divisors is an integer number (174486069).

Almost surely, 2^696606697 is an apocalyptic number.

It is an amenable number.

696606697 is a deficient number, since it is larger than the sum of its proper divisors (1337579).

696606697 is a wasteful number, since it uses less digits than its factorization.

696606697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337578.

The product of its (nonzero) digits is 4408992, while the sum is 55.

The square root of 696606697 is about 26393.3078070938. The cubic root of 696606697 is about 886.4669498707.

Subtracting 696606697 from its reverse (796606696), we obtain a palindrome (99999999).

The spelling of 696606697 in words is "six hundred ninety-six million, six hundred six thousand, six hundred ninety-seven".