11662621 has 2 divisors, whose sum is σ = 11662622. Its totient is φ = 11662620.

The previous prime is 11662613. The next prime is 11662631. The reversal of 11662621 is 12626611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11655396 + 7225 = 3414^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 11662621 - 2³ = 11662613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11662631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5831310 + 5831311.

It is an arithmetic number, because the mean of its divisors is an integer number (5831311).

Almost surely, 2^11662621 is an apocalyptic number.

It is an amenable number.

11662621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11662621 is an equidigital number, since it uses as much as digits as its factorization.

11662621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 11662621 is about 3415.0579790100. The cubic root of 11662621 is about 226.7768512259.

The spelling of 11662621 in words is "eleven million, six hundred sixty-two thousand, six hundred twenty-one".