12976637 has 4 divisors (see below), whose sum is σ = 13196640. Its totient is φ = 12756636.

The previous prime is 12976567. The next prime is 12976643. The reversal of 12976637 is 73667921.

12976637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73667921 = 19 ⋅3877259.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12976637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12976594 and 12976603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12976657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109913 + ... + 110030.

It is an arithmetic number, because the mean of its divisors is an integer number (3299160).

Almost surely, 2^12976637 is an apocalyptic number.

It is an amenable number.

12976637 is a deficient number, since it is larger than the sum of its proper divisors (220003).

12976637 is an equidigital number, since it uses as much as digits as its factorization.

12976637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220002.

The product of its digits is 95256, while the sum is 41.

The square root of 12976637 is about 3602.3099533494. The cubic root of 12976637 is about 234.9925273012.

The spelling of 12976637 in words is "twelve million, nine hundred seventy-six thousand, six hundred thirty-seven".