13604961 has 8 divisors (see below), whose sum is σ = 18316480. Its totient is φ = 8981712.

The previous prime is 13604957. The next prime is 13604971. The reversal of 13604961 is 16940631.

13604961 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13604961 - 2² = 13604957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13604911) 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, 21706 + ... + 22323.

It is an arithmetic number, because the mean of its divisors is an integer number (2289560).

Almost surely, 2^13604961 is an apocalyptic number.

It is an amenable number.

13604961 is a deficient number, since it is larger than the sum of its proper divisors (4711519).

13604961 is a wasteful number, since it uses less digits than its factorization.

13604961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44135.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 13604961 is about 3688.4903415896. The cubic root of 13604961 is about 238.7256587302.

The spelling of 13604961 in words is "thirteen million, six hundred four thousand, nine hundred sixty-one".