16668053 has 4 divisors (see below), whose sum is σ = 16677420. Its totient is φ = 16658688.

The previous prime is 16668037. The next prime is 16668079. The reversal of 16668053 is 35086661.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 35086661 = 23 ⋅1525507.

It can be written as a sum of positive squares in 2 ways, for example, as 3541924 + 13126129 = 1882^2 + 3623^2 .

It is a cyclic number.

It is not a de Polignac number, because 16668053 - 2⁴ = 16668037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16668013) 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, 1100 + ... + 5877.

It is an arithmetic number, because the mean of its divisors is an integer number (4169355).

Almost surely, 2^16668053 is an apocalyptic number.

It is an amenable number.

16668053 is a deficient number, since it is larger than the sum of its proper divisors (9367).

16668053 is an equidigital number, since it uses as much as digits as its factorization.

16668053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9366.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 16668053 is about 4082.6526915720. The cubic root of 16668053 is about 255.4435596702.

The spelling of 16668053 in words is "sixteen million, six hundred sixty-eight thousand, fifty-three".