11950661 has 2 divisors, whose sum is σ = 11950662. Its totient is φ = 11950660.

The previous prime is 11950637. The next prime is 11950681. The reversal of 11950661 is 16605911.

11950661 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., 11764900 + 185761 = 3430^2 + 431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11950661 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 (11950681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5975330 + 5975331.

It is an arithmetic number, because the mean of its divisors is an integer number (5975331).

Almost surely, 2^11950661 is an apocalyptic number.

It is an amenable number.

11950661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11950661 is an equidigital number, since it uses as much as digits as its factorization.

11950661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 11950661 is about 3456.9728086868. The cubic root of 11950661 is about 228.6286449583.

The spelling of 11950661 in words is "eleven million, nine hundred fifty thousand, six hundred sixty-one".