13008661 has 8 divisors (see below), whose sum is σ = 13370720. Its totient is φ = 12649392.

The previous prime is 13008659. The next prime is 13008679. The reversal of 13008661 is 16680031.

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 13008661 - 2¹ = 13008659 is a prime.

It is a super-2 number, since 2×13008661² = 338450522025842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13008601) 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, 11635 + ... + 12703.

It is an arithmetic number, because the mean of its divisors is an integer number (1671340).

Almost surely, 2^13008661 is an apocalyptic number.

It is an amenable number.

13008661 is a deficient number, since it is larger than the sum of its proper divisors (362059).

13008661 is a wasteful number, since it uses less digits than its factorization.

13008661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 13008661 is about 3606.7521400839. The cubic root of 13008661 is about 235.1856748973.

Adding to 13008661 its reverse (16680031), we get a palindrome (29688692).

The spelling of 13008661 in words is "thirteen million, eight thousand, six hundred sixty-one".