13617961 has 8 divisors (see below), whose sum is σ = 15984320. Its totient is φ = 11356848.

The previous prime is 13617953. The next prime is 13617977. The reversal of 13617961 is 16971631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13617961 - 2³ = 13617953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13617911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26031 + ... + 26548.

It is an arithmetic number, because the mean of its divisors is an integer number (1998040).

Almost surely, 2^13617961 is an apocalyptic number.

It is an amenable number.

13617961 is a deficient number, since it is larger than the sum of its proper divisors (2366359).

13617961 is an equidigital number, since it uses as much as digits as its factorization.

13617961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52623.

The product of its digits is 6804, while the sum is 34.

The square root of 13617961 is about 3690.2521594059. The cubic root of 13617961 is about 238.8016713359.

The spelling of 13617961 in words is "thirteen million, six hundred seventeen thousand, nine hundred sixty-one".