9631690 has 32 divisors (see below), whose sum is σ = 18720720. Its totient is φ = 3554304.

The previous prime is 9631681. The next prime is 9631697. The reversal of 9631690 is 961369.

It can be written as a sum of positive squares in 8 ways, for example, as 6466849 + 3164841 = 2543^2 + 1779^2 .

It is a super-2 number, since 2×9631690² = 185538904512200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (9631697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8476 + ... + 9544.

Almost surely, 2^9631690 is an apocalyptic number.

9631690 is a deficient number, since it is larger than the sum of its proper divisors (9089030).

9631690 is a wasteful number, since it uses less digits than its factorization.

9631690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 9631690 is about 3103.4964153355. The cubic root of 9631690 is about 212.7653156626.

The spelling of 9631690 in words is "nine million, six hundred thirty-one thousand, six hundred ninety".