12790081 has 4 divisors (see below), whose sum is σ = 12816832. Its totient is φ = 12763332.

The previous prime is 12790061. The next prime is 12790091. The reversal of 12790081 is 18009721.

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: 18009721 = 317 ⋅56813.

It is a cyclic number.

It is not a de Polignac number, because 12790081 - 2¹¹ = 12788033 is a prime.

It is a super-2 number, since 2×12790081² = 327172343973122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12790061) 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, 12645 + ... + 13618.

It is an arithmetic number, because the mean of its divisors is an integer number (3204208).

Almost surely, 2^12790081 is an apocalyptic number.

It is an amenable number.

12790081 is a deficient number, since it is larger than the sum of its proper divisors (26751).

12790081 is an equidigital number, since it uses as much as digits as its factorization.

12790081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26750.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 12790081 is about 3576.3222729502. The cubic root of 12790081 is about 233.8609798342.

The spelling of 12790081 in words is "twelve million, seven hundred ninety thousand, eighty-one".