11862661 has 2 divisors, whose sum is σ = 11862662. Its totient is φ = 11862660.

The previous prime is 11862623. The next prime is 11862673. The reversal of 11862661 is 16626811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7049025 + 4813636 = 2655^2 + 2194^2 .

It is a cyclic number.

It is not a de Polignac number, because 11862661 - 2¹¹ = 11860613 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11862611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5931330 + 5931331.

It is an arithmetic number, because the mean of its divisors is an integer number (5931331).

Almost surely, 2^11862661 is an apocalyptic number.

It is an amenable number.

11862661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11862661 is an equidigital number, since it uses as much as digits as its factorization.

11862661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 31.

The square root of 11862661 is about 3444.2213924195. The cubic root of 11862661 is about 228.0660845168.

The spelling of 11862661 in words is "eleven million, eight hundred sixty-two thousand, six hundred sixty-one".