13661401 has 8 divisors (see below), whose sum is σ = 15055040. Its totient is φ = 12316752.

The previous prime is 13661369. The next prime is 13661419. The reversal of 13661401 is 10416631.

It is a happy number.

13661401 is digitally balanced in base 2, because in such base 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 a cyclic number.

It is not a de Polignac number, because 13661401 - 2⁵ = 13661369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13661491) 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, 11661 + ... + 12778.

It is an arithmetic number, because the mean of its divisors is an integer number (1881880).

Almost surely, 2^13661401 is an apocalyptic number.

It is an amenable number.

13661401 is a deficient number, since it is larger than the sum of its proper divisors (1393639).

13661401 is a wasteful number, since it uses less digits than its factorization.

13661401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24495.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 13661401 is about 3696.1332497625. The cubic root of 13661401 is about 239.0553200259.

The spelling of 13661401 in words is "thirteen million, six hundred sixty-one thousand, four hundred one".