16744641 has 4 divisors (see below), whose sum is σ = 22326192. Its totient is φ = 11163092.

The previous prime is 16744639. The next prime is 16744649. The reversal of 16744641 is 14644761.

16744641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14644761 = 3 ⋅4881587.

It is a cyclic number.

It is not a de Polignac number, because 16744641 - 2¹ = 16744639 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16744649) 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, 2790771 + ... + 2790776.

It is an arithmetic number, because the mean of its divisors is an integer number (5581548).

Almost surely, 2^16744641 is an apocalyptic number.

It is an amenable number.

16744641 is a deficient number, since it is larger than the sum of its proper divisors (5581551).

16744641 is an equidigital number, since it uses as much as digits as its factorization.

16744641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5581550.

The product of its digits is 16128, while the sum is 33.

The square root of 16744641 is about 4092.0216275088. The cubic root of 16744641 is about 255.8342076338.

The spelling of 16744641 in words is "sixteen million, seven hundred forty-four thousand, six hundred forty-one".