12696490 has 16 divisors (see below), whose sum is σ = 23642280. Its totient is φ = 4903360.

The previous prime is 12696487. The next prime is 12696491. The reversal of 12696490 is 9469621.

It can be written as a sum of positive squares in 4 ways, for example, as 12552849 + 143641 = 3543^2 + 379^2 .

It is a super-2 number, since 2×12696490² = 322401716640200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12696491) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 21601 + ... + 22180.

Almost surely, 2^12696490 is an apocalyptic number.

12696490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12696490 is a deficient number, since it is larger than the sum of its proper divisors (10945790).

12696490 is a wasteful number, since it uses less digits than its factorization.

12696490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43817.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 12696490 is about 3563.2134373343. The cubic root of 12696490 is about 233.2891594381.

The spelling of 12696490 in words is "twelve million, six hundred ninety-six thousand, four hundred ninety".