13591669 has 24 divisors (see below), whose sum is σ = 17939040. Its totient is φ = 10178784.

The previous prime is 13591657. The next prime is 13591681. The reversal of 13591669 is 96619531.

It is an interprime number because it is at equal distance from previous prime (13591657) and next prime (13591681).

It is not a de Polignac number, because 13591669 - 2⁹ = 13591157 is a prime.

It is a super-2 number, since 2×13591669² = 369466932411122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13591069) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11542 + ... + 12664.

It is an arithmetic number, because the mean of its divisors is an integer number (747460).

Almost surely, 2^13591669 is an apocalyptic number.

13591669 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13591669 is a deficient number, since it is larger than the sum of its proper divisors (4347371).

13591669 is a wasteful number, since it uses less digits than its factorization.

13591669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169 (or 1162 counting only the distinct ones).

The product of its digits is 43740, while the sum is 40.

The square root of 13591669 is about 3686.6880801066. The cubic root of 13591669 is about 238.6478886824.

The spelling of 13591669 in words is "thirteen million, five hundred ninety-one thousand, six hundred sixty-nine".