12612690 has 48 divisors (see below), whose sum is σ = 32968728. Its totient is φ = 3345408.

The previous prime is 12612679. The next prime is 12612703. The reversal of 12612690 is 9621621.

It can be written as a sum of positive squares in 4 ways, for example, as 10478169 + 2134521 = 3237^2 + 1461^2 .

It is a super-2 number, since 2×12612690² = 318159898072200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31572 + ... + 31968.

Almost surely, 2^12612690 is an apocalyptic number.

12612690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12612690 is an abundant number, since it is smaller than the sum of its proper divisors (20356038).

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

12612690 is a wasteful number, since it uses less digits than its factorization.

12612690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 12612690 is about 3551.4349212677. The cubic root of 12612690 is about 232.7747705326.

The spelling of 12612690 in words is "twelve million, six hundred twelve thousand, six hundred ninety".