16660049 has 12 divisors (see below), whose sum is σ = 19833264. Its totient is φ = 13946184.

The previous prime is 16660037. The next prime is 16660057. The reversal of 16660049 is 94006661.

It is a de Polignac number, because none of the positive numbers 2^k-16660049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16659997 and 16660024.

It is not an unprimeable number, because it can be changed into a prime (16660069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1847 + ... + 6060.

It is an arithmetic number, because the mean of its divisors is an integer number (1652772).

Almost surely, 2^16660049 is an apocalyptic number.

It is an amenable number.

16660049 is a deficient number, since it is larger than the sum of its proper divisors (3173215).

16660049 is an equidigital number, since it uses as much as digits as its factorization.

16660049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7964 (or 7957 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 16660049 is about 4081.6723288378. The cubic root of 16660049 is about 255.4026651197.

The spelling of 16660049 in words is "sixteen million, six hundred sixty thousand, forty-nine".