13087645 has 8 divisors (see below), whose sum is σ = 15724800. Its totient is φ = 10457040.

The previous prime is 13087639. The next prime is 13087649. The reversal of 13087645 is 54678031.

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

It is a de Polignac number, because none of the positive numbers 2^k-13087645 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13087645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13087649) 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, 6060 + ... + 7930.

It is an arithmetic number, because the mean of its divisors is an integer number (1965600).

Almost surely, 2^13087645 is an apocalyptic number.

It is an amenable number.

13087645 is a deficient number, since it is larger than the sum of its proper divisors (2637155).

13087645 is a wasteful number, since it uses less digits than its factorization.

13087645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 13087645 is about 3617.6850332775. The cubic root of 13087645 is about 235.6607029370.

The spelling of 13087645 in words is "thirteen million, eighty-seven thousand, six hundred forty-five".