13179661 has 4 divisors (see below), whose sum is σ = 14377824. Its totient is φ = 11981500.

The previous prime is 13179643. The next prime is 13179671. The reversal of 13179661 is 16697131.

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: 16697131 = 11 ⋅1517921.

It is a cyclic number.

It is not a de Polignac number, because 13179661 - 2⁷ = 13179533 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 (13179611) by changing a digit.

It is a nontrivial repunit in base 60.

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, 599065 + ... + 599086.

It is an arithmetic number, because the mean of its divisors is an integer number (3594456).

Almost surely, 2^13179661 is an apocalyptic number.

13179661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13179661 is a deficient number, since it is larger than the sum of its proper divisors (1198163).

13179661 is a wasteful number, since it uses less digits than its factorization.

13179661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198162.

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

The square root of 13179661 is about 3630.3802831108. The cubic root of 13179661 is about 236.2117043644.

The spelling of 13179661 in words is "thirteen million, one hundred seventy-nine thousand, six hundred sixty-one".