13507665 has 8 divisors (see below), whose sum is σ = 21612288. Its totient is φ = 7204080.

The previous prime is 13507643. The next prime is 13507717. The reversal of 13507665 is 56670531.

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

It is not a de Polignac number, because 13507665 - 2¹⁰ = 13506641 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450241 + ... + 450270.

It is an arithmetic number, because the mean of its divisors is an integer number (2701536).

Almost surely, 2^13507665 is an apocalyptic number.

13507665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13507665 is a deficient number, since it is larger than the sum of its proper divisors (8104623).

13507665 is an equidigital number, since it uses as much as digits as its factorization.

13507665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900519.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 13507665 is about 3675.2775405403. The cubic root of 13507665 is about 238.1552138211.

The spelling of 13507665 in words is "thirteen million, five hundred seven thousand, six hundred sixty-five".