13797661 has 4 divisors (see below), whose sum is σ = 13906432. Its totient is φ = 13688892.

The previous prime is 13797653. The next prime is 13797673. The reversal of 13797661 is 16679731.

It is a happy number.

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: 16679731 = 223 ⋅74797.

It is a cyclic number.

It is not a de Polignac number, because 13797661 - 2³ = 13797653 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 (13797611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54195 + ... + 54448.

It is an arithmetic number, because the mean of its divisors is an integer number (3476608).

Almost surely, 2^13797661 is an apocalyptic number.

It is an amenable number.

13797661 is a deficient number, since it is larger than the sum of its proper divisors (108771).

13797661 is a wasteful number, since it uses less digits than its factorization.

13797661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108770.

The product of its digits is 47628, while the sum is 40.

The square root of 13797661 is about 3714.5202920431. The cubic root of 13797661 is about 239.8474783234.

The spelling of 13797661 in words is "thirteen million, seven hundred ninety-seven thousand, six hundred sixty-one".