13665157 has 8 divisors (see below), whose sum is σ = 15118272. Its totient is φ = 12247200.

The previous prime is 13665143. The next prime is 13665163. The reversal of 13665157 is 75156631.

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

It is a cyclic number.

It is not a de Polignac number, because 13665157 - 2¹⁵ = 13632389 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 (13665107) 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, 7968 + ... + 9529.

It is an arithmetic number, because the mean of its divisors is an integer number (1889784).

Almost surely, 2^13665157 is an apocalyptic number.

It is an amenable number.

13665157 is a deficient number, since it is larger than the sum of its proper divisors (1453115).

13665157 is a wasteful number, since it uses less digits than its factorization.

13665157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17579.

The product of its digits is 18900, while the sum is 34.

The square root of 13665157 is about 3696.6413134087. The cubic root of 13665157 is about 239.0772262590.

The spelling of 13665157 in words is "thirteen million, six hundred sixty-five thousand, one hundred fifty-seven".