13000906 has 4 divisors (see below), whose sum is σ = 19501362. Its totient is φ = 6500452.

The previous prime is 13000891. The next prime is 13000909. The reversal of 13000906 is 60900031.

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

It can be written as a sum of positive squares in only one way, i.e., 12895281 + 105625 = 3591^2 + 325^2 .

It is not an unprimeable number, because it can be changed into a prime (13000909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3250225 + ... + 3250228.

Almost surely, 2^13000906 is an apocalyptic number.

13000906 is a deficient number, since it is larger than the sum of its proper divisors (6500456).

13000906 is an equidigital number, since it uses as much as digits as its factorization.

13000906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6500455.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 13000906 is about 3605.6769128695. The cubic root of 13000906 is about 235.1389309765.

Adding to 13000906 its reverse (60900031), we get a palindrome (73900937).

The spelling of 13000906 in words is "thirteen million, nine hundred six", and thus it is an aban number.