12996581 has 16 divisors (see below), whose sum is σ = 14515200. Its totient is φ = 11561088.

The previous prime is 12996559. The next prime is 12996629. The reversal of 12996581 is 18569921.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12996581 is a prime.

It is a super-2 number, since 2×12996581² = 337822235379122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12996281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54260 + ... + 54498.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

Almost surely, 2^12996581 is an apocalyptic number.

It is an amenable number.

12996581 is a deficient number, since it is larger than the sum of its proper divisors (1518619).

12996581 is a wasteful number, since it uses less digits than its factorization.

12996581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388.

The product of its digits is 38880, while the sum is 41.

The square root of 12996581 is about 3605.0771142931. The cubic root of 12996581 is about 235.1128535973.

The spelling of 12996581 in words is "twelve million, nine hundred ninety-six thousand, five hundred eighty-one".