13144966 has 4 divisors (see below), whose sum is σ = 19717452. Its totient is φ = 6572482.

The previous prime is 13144949. The next prime is 13144993. The reversal of 13144966 is 66944131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66944131 = 257 ⋅260483.

It is a super-2 number, since 2×13144966² = 345580262282312, which contains 22 as substring.

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, 3286240 + ... + 3286243.

It is an arithmetic number, because the mean of its divisors is an integer number (4929363).

Almost surely, 2^13144966 is an apocalyptic number.

13144966 is a deficient number, since it is larger than the sum of its proper divisors (6572486).

13144966 is an equidigital number, since it uses as much as digits as its factorization.

13144966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6572485.

The product of its digits is 15552, while the sum is 34.

The square root of 13144966 is about 3625.5987091789. The cubic root of 13144966 is about 236.0042491814.

The spelling of 13144966 in words is "thirteen million, one hundred forty-four thousand, nine hundred sixty-six".