11615651 has 2 divisors, whose sum is σ = 11615652. Its totient is φ = 11615650.

The previous prime is 11615647. The next prime is 11615663. The reversal of 11615651 is 15651611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11615651 - 2² = 11615647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11615651.

It is not a weakly prime, because it can be changed into another prime (11615551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5807825 + 5807826.

It is an arithmetic number, because the mean of its divisors is an integer number (5807826).

Almost surely, 2^11615651 is an apocalyptic number.

11615651 is a deficient number, since it is larger than the sum of its proper divisors (1).

11615651 is an equidigital number, since it uses as much as digits as its factorization.

11615651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 26.

The square root of 11615651 is about 3408.1741446117. The cubic root of 11615651 is about 226.4720015032.

The spelling of 11615651 in words is "eleven million, six hundred fifteen thousand, six hundred fifty-one".