13426646 has 4 divisors (see below), whose sum is σ = 20139972. Its totient is φ = 6713322.

The previous prime is 13426613. The next prime is 13426657. The reversal of 13426646 is 64662431.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3356660 + ... + 3356663.

It is an arithmetic number, because the mean of its divisors is an integer number (5034993).

Almost surely, 2^13426646 is an apocalyptic number.

13426646 is a deficient number, since it is larger than the sum of its proper divisors (6713326).

13426646 is an equidigital number, since it uses as much as digits as its factorization.

13426646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6713325.

The product of its digits is 20736, while the sum is 32.

The square root of 13426646 is about 3664.2388022617. The cubic root of 13426646 is about 237.6781068433.

The spelling of 13426646 in words is "thirteen million, four hundred twenty-six thousand, six hundred forty-six".