9687690 has 24 divisors (see below), whose sum is σ = 25188228. Its totient is φ = 2583360.

The previous prime is 9687661. The next prime is 9687697. The reversal of 9687690 is 967869.

It can be written as a sum of positive squares in 2 ways, for example, as 9199089 + 488601 = 3033^2 + 699^2 .

It is a super-2 number, since 2×9687690² = 187702675072200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (9687697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53731 + ... + 53910.

Almost surely, 2^9687690 is an apocalyptic number.

9687690 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

9687690 is an abundant number, since it is smaller than the sum of its proper divisors (15500538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9687690 is a wasteful number, since it uses less digits than its factorization.

9687690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107654 (or 107651 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 9687690 is about 3112.5054216820. The cubic root of 9687690 is about 213.1768682362.

The spelling of 9687690 in words is "nine million, six hundred eighty-seven thousand, six hundred ninety".