12623645 has 8 divisors (see below), whose sum is σ = 15397080. Its totient is φ = 9933120.

The previous prime is 12623641. The next prime is 12623659. The reversal of 12623645 is 54632621.

12623645 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 190969 + 12432676 = 437^2 + 3526^2 .

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

It is not a de Polignac number, because 12623645 - 2² = 12623641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12623641) 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, 20390 + ... + 20999.

It is an arithmetic number, because the mean of its divisors is an integer number (1924635).

Almost surely, 2^12623645 is an apocalyptic number.

It is an amenable number.

12623645 is a deficient number, since it is larger than the sum of its proper divisors (2773435).

12623645 is an equidigital number, since it uses as much as digits as its factorization.

12623645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41455.

The product of its digits is 8640, while the sum is 29.

The square root of 12623645 is about 3552.9769208369. The cubic root of 12623645 is about 232.8421447319.

The spelling of 12623645 in words is "twelve million, six hundred twenty-three thousand, six hundred forty-five".