11400661 has 2 divisors, whose sum is σ = 11400662. Its totient is φ = 11400660.

The previous prime is 11400643. The next prime is 11400667. The reversal of 11400661 is 16600411.

It is a happy number.

11400661 is digitally balanced in base 3, 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., 10201636 + 1199025 = 3194^2 + 1095^2 .

It is a cyclic number.

It is not a de Polignac number, because 11400661 - 2⁷ = 11400533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11400667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5700330 + 5700331.

It is an arithmetic number, because the mean of its divisors is an integer number (5700331).

Almost surely, 2^11400661 is an apocalyptic number.

It is an amenable number.

11400661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11400661 is an equidigital number, since it uses as much as digits as its factorization.

11400661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 11400661 is about 3376.4864874600. The cubic root of 11400661 is about 225.0660612606.

The spelling of 11400661 in words is "eleven million, four hundred thousand, six hundred sixty-one".