11644901 has 2 divisors, whose sum is σ = 11644902. Its totient is φ = 11644900.

The previous prime is 11644859. The next prime is 11644903. The reversal of 11644901 is 10944611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9928801 + 1716100 = 3151^2 + 1310^2 .

It is an emirp because it is prime and its reverse (10944611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11644901 - 2¹⁴ = 11628517 is a prime.

Together with 11644903, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₇₆₆₂₃₂ and since 11644901 and 766232 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11644903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5822450 + 5822451.

It is an arithmetic number, because the mean of its divisors is an integer number (5822451).

Almost surely, 2^11644901 is an apocalyptic number.

It is an amenable number.

11644901 is a deficient number, since it is larger than the sum of its proper divisors (1).

11644901 is an equidigital number, since it uses as much as digits as its factorization.

11644901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 11644901 is about 3412.4626005277. The cubic root of 11644901 is about 226.6619392997.

The spelling of 11644901 in words is "eleven million, six hundred forty-four thousand, nine hundred one".