13801569 has 8 divisors (see below), whose sum is σ = 19484640. Its totient is φ = 8659776.

The previous prime is 13801561. The next prime is 13801573. The reversal of 13801569 is 96510831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13801569 - 2³ = 13801561 is a prime.

It is a super-2 number, since 2×13801569² = 380966613723522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13801561) 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, 135259 + ... + 135360.

It is an arithmetic number, because the mean of its divisors is an integer number (2435580).

Almost surely, 2^13801569 is an apocalyptic number.

It is an amenable number.

13801569 is a deficient number, since it is larger than the sum of its proper divisors (5683071).

13801569 is a wasteful number, since it uses less digits than its factorization.

13801569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270639.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 13801569 is about 3715.0462985002. The cubic root of 13801569 is about 239.8701206989.

The spelling of 13801569 in words is "thirteen million, eight hundred one thousand, five hundred sixty-nine".