13661006 has 4 divisors (see below), whose sum is σ = 20491512. Its totient is φ = 6830502.

The previous prime is 13661003. The next prime is 13661017. The reversal of 13661006 is 60016631.

13661006 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13661003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3415250 + ... + 3415253.

It is an arithmetic number, because the mean of its divisors is an integer number (5122878).

Almost surely, 2^13661006 is an apocalyptic number.

13661006 is a deficient number, since it is larger than the sum of its proper divisors (6830506).

13661006 is an equidigital number, since it uses as much as digits as its factorization.

13661006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6830505.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 13661006 is about 3696.0798151555. The cubic root of 13661006 is about 239.0530160220.

Adding to 13661006 its reverse (60016631), we get a palindrome (73677637).

The spelling of 13661006 in words is "thirteen million, six hundred sixty-one thousand, six".