11649601 has 2 divisors, whose sum is σ = 11649602. Its totient is φ = 11649600.

The previous prime is 11649587. The next prime is 11649611. The reversal of 11649601 is 10694611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11048976 + 600625 = 3324^2 + 775^2 .

It is an emirp because it is prime and its reverse (10694611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11649601 - 2²³ = 3260993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11649601.

It is not a weakly prime, because it can be changed into another prime (11649611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5824800 + 5824801.

It is an arithmetic number, because the mean of its divisors is an integer number (5824801).

Almost surely, 2^11649601 is an apocalyptic number.

It is an amenable number.

11649601 is a deficient number, since it is larger than the sum of its proper divisors (1).

11649601 is an equidigital number, since it uses as much as digits as its factorization.

11649601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 11649601 is about 3413.1511832909. The cubic root of 11649601 is about 226.6924295496.

The spelling of 11649601 in words is "eleven million, six hundred forty-nine thousand, six hundred one".