11917601 has 4 divisors (see below), whose sum is σ = 11940912. Its totient is φ = 11894292.

The previous prime is 11917597. The next prime is 11917603. The reversal of 11917601 is 10671911.

11917601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10671911 = 2833 ⋅3767.

It is a cyclic number.

It is not a de Polignac number, because 11917601 - 2² = 11917597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11917603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10871 + ... + 11916.

It is an arithmetic number, because the mean of its divisors is an integer number (2985228).

Almost surely, 2^11917601 is an apocalyptic number.

It is an amenable number.

11917601 is a deficient number, since it is larger than the sum of its proper divisors (23311).

11917601 is an equidigital number, since it uses as much as digits as its factorization.

11917601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23310.

The product of its (nonzero) digits is 378, while the sum is 26.

The square root of 11917601 is about 3452.1878569974. The cubic root of 11917601 is about 228.4176261262.

The spelling of 11917601 in words is "eleven million, nine hundred seventeen thousand, six hundred one".