12637693 has 2 divisors, whose sum is σ = 12637694. Its totient is φ = 12637692.

The previous prime is 12637673. The next prime is 12637697. The reversal of 12637693 is 39673621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10903204 + 1734489 = 3302^2 + 1317^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12637693 is a prime.

It is a super-2 number, since 2×12637693² = 319422568724498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12637697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6318846 + 6318847.

It is an arithmetic number, because the mean of its divisors is an integer number (6318847).

Almost surely, 2^12637693 is an apocalyptic number.

It is an amenable number.

12637693 is a deficient number, since it is larger than the sum of its proper divisors (1).

12637693 is an equidigital number, since it uses as much as digits as its factorization.

12637693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 37.

The square root of 12637693 is about 3554.9533048973. The cubic root of 12637693 is about 232.9284841332.

The spelling of 12637693 in words is "twelve million, six hundred thirty-seven thousand, six hundred ninety-three".