13001655 has 8 divisors (see below), whose sum is σ = 20802672. Its totient is φ = 6934208.

The previous prime is 13001627. The next prime is 13001663. The reversal of 13001655 is 55610031.

It is a happy number.

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 13001655 - 2²¹ = 10904503 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433374 + ... + 433403.

It is an arithmetic number, because the mean of its divisors is an integer number (2600334).

Almost surely, 2^13001655 is an apocalyptic number.

13001655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13001655 is a deficient number, since it is larger than the sum of its proper divisors (7801017).

13001655 is an equidigital number, since it uses as much as digits as its factorization.

13001655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866785.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 13001655 is about 3605.7807753661. The cubic root of 13001655 is about 235.1434464484.

Adding to 13001655 its reverse (55610031), we get a palindrome (68611686).

The spelling of 13001655 in words is "thirteen million, one thousand, six hundred fifty-five".