16666245 has 24 divisors (see below), whose sum is σ = 28993536. Its totient is φ = 8856288.

The previous prime is 16666231. The next prime is 16666267. The reversal of 16666245 is 54266661.

It is a happy number.

It is not a de Polignac number, because 16666245 - 2¹⁰ = 16665221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16752 + ... + 17718.

It is an arithmetic number, because the mean of its divisors is an integer number (1208064).

Almost surely, 2^16666245 is an apocalyptic number.

16666245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16666245 is a deficient number, since it is larger than the sum of its proper divisors (12327291).

16666245 is a wasteful number, since it uses less digits than its factorization.

16666245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361 (or 1358 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 16666245 is about 4082.4312609032. The cubic root of 16666245 is about 255.4343232654.

The spelling of 16666245 in words is "sixteen million, six hundred sixty-six thousand, two hundred forty-five".