16662998 has 8 divisors (see below), whose sum is σ = 27266760. Its totient is φ = 7574080.

The previous prime is 16662991. The next prime is 16663013. The reversal of 16662998 is 89926661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16662991) 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, 378683 + ... + 378726.

It is an arithmetic number, because the mean of its divisors is an integer number (3408345).

Almost surely, 2^16662998 is an apocalyptic number.

16662998 is a deficient number, since it is larger than the sum of its proper divisors (10603762).

16662998 is a wasteful number, since it uses less digits than its factorization.

16662998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757422.

The product of its digits is 279936, while the sum is 47.

The square root of 16662998 is about 4082.0335618415. The cubic root of 16662998 is about 255.4177338634.

It can be divided in two parts, 1666 and 2998, that added together give a palindrome (4664).

The spelling of 16662998 in words is "sixteen million, six hundred sixty-two thousand, nine hundred ninety-eight".