16664441 has 4 divisors (see below), whose sum is σ = 16913232. Its totient is φ = 16415652.

The previous prime is 16664411. The next prime is 16664447. The reversal of 16664441 is 14446661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16664441 - 2⁶ = 16664377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16664398 and 16664407.

It is not an unprimeable number, because it can be changed into a prime (16664447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124295 + ... + 124428.

It is an arithmetic number, because the mean of its divisors is an integer number (4228308).

Almost surely, 2^16664441 is an apocalyptic number.

It is an amenable number.

16664441 is a deficient number, since it is larger than the sum of its proper divisors (248791).

16664441 is an equidigital number, since it uses as much as digits as its factorization.

16664441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248790.

The product of its digits is 13824, while the sum is 32.

The square root of 16664441 is about 4082.2103081541. The cubic root of 16664441 is about 255.4251066293.

The spelling of 16664441 in words is "sixteen million, six hundred sixty-four thousand, four hundred forty-one".