13902661 has 4 divisors (see below), whose sum is σ = 14634400. Its totient is φ = 13170924.

The previous prime is 13902653. The next prime is 13902667. The reversal of 13902661 is 16620931.

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.

It is a cyclic number.

It is not a de Polignac number, because 13902661 - 2³ = 13902653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13902667) 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, 365841 + ... + 365878.

It is an arithmetic number, because the mean of its divisors is an integer number (3658600).

Almost surely, 2^13902661 is an apocalyptic number.

It is an amenable number.

13902661 is a deficient number, since it is larger than the sum of its proper divisors (731739).

13902661 is an equidigital number, since it uses as much as digits as its factorization.

13902661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731738.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 13902661 is about 3728.6272272782. The cubic root of 13902661 is about 240.4543534233.

The spelling of 13902661 in words is "thirteen million, nine hundred two thousand, six hundred sixty-one".