696989631 has 24 divisors (see below), whose sum is σ = 1050074496. Its totient is φ = 410261280.

The previous prime is 696989581. The next prime is 696989639. The reversal of 696989631 is 136989696.

It is not a de Polignac number, because 696989631 - 2¹⁸ = 696727487 is a prime.

It is a super-2 number, since 2×696989631² = 971589091443032322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (696989639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18225 + ... + 41546.

It is an arithmetic number, because the mean of its divisors is an integer number (43753104).

Almost surely, 2^696989631 is an apocalyptic number.

696989631 is a deficient number, since it is larger than the sum of its proper divisors (353084865).

696989631 is a wasteful number, since it uses less digits than its factorization.

696989631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59823 (or 59810 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 57.

The square root of 696989631 is about 26400.5611872172. The cubic root of 696989631 is about 886.6293543541.

The spelling of 696989631 in words is "six hundred ninety-six million, nine hundred eighty-nine thousand, six hundred thirty-one".