13880661 has 16 divisors (see below), whose sum is σ = 19837824. Its totient is φ = 8610624.

The previous prime is 13880639. The next prime is 13880677. The reversal of 13880661 is 16608831.

It is not a de Polignac number, because 13880661 - 2⁶ = 13880597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13880261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166 + ... + 5271.

It is an arithmetic number, because the mean of its divisors is an integer number (1239864).

Almost surely, 2^13880661 is an apocalyptic number.

It is an amenable number.

13880661 is a deficient number, since it is larger than the sum of its proper divisors (5957163).

13880661 is a wasteful number, since it uses less digits than its factorization.

13880661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5500.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 13880661 is about 3725.6759118313. The cubic root of 13880661 is about 240.3274523314.

It can be divided in two parts, 13880 and 661, that added together give a palindrome (14541).

The spelling of 13880661 in words is "thirteen million, eight hundred eighty thousand, six hundred sixty-one".