10689631 has 4 divisors (see below), whose sum is σ = 10697200. Its totient is φ = 10682064.

The previous prime is 10689629. The next prime is 10689713. The reversal of 10689631 is 13698601.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 10689631 - 2¹ = 10689629 is a prime.

It is a super-2 number, since 2×10689631² = 228536421832322, which contains 22 as substring.

It is the 3270-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10689431) by changing a digit.

It is a nontrivial repunit in base 3269.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 966 + ... + 4723.

It is an arithmetic number, because the mean of its divisors is an integer number (2674300).

Almost surely, 2^10689631 is an apocalyptic number.

10689631 is a deficient number, since it is larger than the sum of its proper divisors (7569).

10689631 is an equidigital number, since it uses as much as digits as its factorization.

10689631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7568.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 10689631 is about 3269.5001146964. The cubic root of 10689631 is about 220.2863420245.

The spelling of 10689631 in words is "ten million, six hundred eighty-nine thousand, six hundred thirty-one".