12622561 has 8 divisors (see below), whose sum is σ = 15053184. Its totient is φ = 10348800.

The previous prime is 12622559. The next prime is 12622573. The reversal of 12622561 is 16522621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12622561 - 2¹ = 12622559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12622591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39040 + ... + 39361.

It is an arithmetic number, because the mean of its divisors is an integer number (1881648).

Almost surely, 2^12622561 is an apocalyptic number.

It is an amenable number.

12622561 is a deficient number, since it is larger than the sum of its proper divisors (2430623).

12622561 is an equidigital number, since it uses as much as digits as its factorization.

12622561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78431.

The product of its digits is 1440, while the sum is 25.

The square root of 12622561 is about 3552.8243694278. The cubic root of 12622561 is about 232.8354797761.

The spelling of 12622561 in words is "twelve million, six hundred twenty-two thousand, five hundred sixty-one".