13445666 has 16 divisors (see below), whose sum is σ = 22184064. Its totient is φ = 6073104.

The previous prime is 13445659. The next prime is 13445683. The reversal of 13445666 is 66654431.

It is a plaindrome in base 10.

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, 4280 + ... + 6723.

It is an arithmetic number, because the mean of its divisors is an integer number (1386504).

Almost surely, 2^13445666 is an apocalyptic number.

13445666 is a deficient number, since it is larger than the sum of its proper divisors (8738398).

13445666 is a wasteful number, since it uses less digits than its factorization.

13445666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11065.

The product of its digits is 51840, while the sum is 35.

The square root of 13445666 is about 3666.8332386407. The cubic root of 13445666 is about 237.7902843905.

The spelling of 13445666 in words is "thirteen million, four hundred forty-five thousand, six hundred sixty-six".