13353691 has 4 divisors (see below), whose sum is σ = 14380912. Its totient is φ = 12326472.

The previous prime is 13353679. The next prime is 13353719. The reversal of 13353691 is 19635331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19635331 = 47 ⋅417773.

It is a cyclic number.

It is not a de Polignac number, because 13353691 - 2⁷ = 13353563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13353611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513591 + ... + 513616.

It is an arithmetic number, because the mean of its divisors is an integer number (3595228).

Almost surely, 2^13353691 is an apocalyptic number.

13353691 is a deficient number, since it is larger than the sum of its proper divisors (1027221).

13353691 is a wasteful number, since it uses less digits than its factorization.

13353691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027220.

The product of its digits is 7290, while the sum is 31.

The square root of 13353691 is about 3654.2702417856. The cubic root of 13353691 is about 237.2468423443.

It can be divided in two parts, 133 and 53691, that added together give a square (53824 = 232²).

The spelling of 13353691 in words is "thirteen million, three hundred fifty-three thousand, six hundred ninety-one".