12637490 has 16 divisors (see below), whose sum is σ = 22797720. Its totient is φ = 5043840.

The previous prime is 12637483. The next prime is 12637507. The reversal of 12637490 is 9473621.

It can be written as a sum of positive squares in 4 ways, for example, as 9114361 + 3523129 = 3019^2 + 1877^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4580 + ... + 6800.

Almost surely, 2^12637490 is an apocalyptic number.

12637490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12637490 is a deficient number, since it is larger than the sum of its proper divisors (10160230).

12637490 is a wasteful number, since it uses less digits than its factorization.

12637490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2797.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 12637490 is about 3554.9247530714. The cubic root of 12637490 is about 232.9272369452.

The spelling of 12637490 in words is "twelve million, six hundred thirty-seven thousand, four hundred ninety".