11623621 has 2 divisors, whose sum is σ = 11623622. Its totient is φ = 11623620.

The previous prime is 11623609. The next prime is 11623627. The reversal of 11623621 is 12632611.

11623621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8767521 + 2856100 = 2961^2 + 1690^2 .

It is a cyclic number.

It is not a de Polignac number, because 11623621 - 2¹⁵ = 11590853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11623592 and 11623601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11623627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5811810 + 5811811.

It is an arithmetic number, because the mean of its divisors is an integer number (5811811).

Almost surely, 2^11623621 is an apocalyptic number.

It is an amenable number.

11623621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11623621 is an equidigital number, since it uses as much as digits as its factorization.

11623621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

The square root of 11623621 is about 3409.3431918773. The cubic root of 11623621 is about 226.5237870692.

The spelling of 11623621 in words is "eleven million, six hundred twenty-three thousand, six hundred twenty-one".