13195906 has 4 divisors (see below), whose sum is σ = 19793862. Its totient is φ = 6597952.

The previous prime is 13195877. The next prime is 13195913. The reversal of 13195906 is 60959131.

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., 7070281 + 6125625 = 2659^2 + 2475^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3298975 + ... + 3298978.

Almost surely, 2^13195906 is an apocalyptic number.

13195906 is a deficient number, since it is larger than the sum of its proper divisors (6597956).

13195906 is an equidigital number, since it uses as much as digits as its factorization.

13195906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6597955.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 13195906 is about 3632.6169630172. The cubic root of 13195906 is about 236.3087145389.

It can be divided in two parts, 1319 and 5906, that added together give a square (7225 = 85²).

The spelling of 13195906 in words is "thirteen million, one hundred ninety-five thousand, nine hundred six".