12622881 has 4 divisors (see below), whose sum is σ = 16830512. Its totient is φ = 8415252.

The previous prime is 12622871. The next prime is 12622903. The reversal of 12622881 is 18822621.

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.

It is not a de Polignac number, because 12622881 - 2⁵ = 12622849 is a prime.

It is a super-2 number, since 2×12622881² = 318674249480322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12622871) 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, 2103811 + ... + 2103816.

It is an arithmetic number, because the mean of its divisors is an integer number (4207628).

Almost surely, 2^12622881 is an apocalyptic number.

It is an amenable number.

12622881 is a deficient number, since it is larger than the sum of its proper divisors (4207631).

12622881 is an equidigital number, since it uses as much as digits as its factorization.

12622881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207630.

The product of its digits is 3072, while the sum is 30.

The square root of 12622881 is about 3552.8694037355. The cubic root of 12622881 is about 232.8374473304.

The spelling of 12622881 in words is "twelve million, six hundred twenty-two thousand, eight hundred eighty-one".