11790721 has 2 divisors, whose sum is σ = 11790722. Its totient is φ = 11790720.

The previous prime is 11790683. The next prime is 11790763. The reversal of 11790721 is 12709711.

11790721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10491121 + 1299600 = 3239^2 + 1140^2 .

It is a cyclic number.

It is not a de Polignac number, because 11790721 - 2⁹ = 11790209 is a prime.

It is a super-2 number, since 2×11790721² = 278042203399682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11790721.

It is not a weakly prime, because it can be changed into another prime (11790781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5895360 + 5895361.

It is an arithmetic number, because the mean of its divisors is an integer number (5895361).

Almost surely, 2^11790721 is an apocalyptic number.

It is an amenable number.

11790721 is a deficient number, since it is larger than the sum of its proper divisors (1).

11790721 is an equidigital number, since it uses as much as digits as its factorization.

11790721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882, while the sum is 28.

The square root of 11790721 is about 3433.7619311769. The cubic root of 11790721 is about 227.6041209179.

The spelling of 11790721 in words is "eleven million, seven hundred ninety thousand, seven hundred twenty-one".