11605651 has 2 divisors, whose sum is σ = 11605652. Its totient is φ = 11605650.

The previous prime is 11605619. The next prime is 11605661. The reversal of 11605651 is 15650611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11605651 - 2⁵ = 11605619 is a prime.

It is a super-2 number, since 2×11605651² = 269382270267602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11605661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5802825 + 5802826.

It is an arithmetic number, because the mean of its divisors is an integer number (5802826).

Almost surely, 2^11605651 is an apocalyptic number.

11605651 is a deficient number, since it is larger than the sum of its proper divisors (1).

11605651 is an equidigital number, since it uses as much as digits as its factorization.

11605651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 11605651 is about 3406.7067675396. The cubic root of 11605651 is about 226.4069923694.

The spelling of 11605651 in words is "eleven million, six hundred five thousand, six hundred fifty-one".