16663930 has 8 divisors (see below), whose sum is σ = 29995092. Its totient is φ = 6665568.

The previous prime is 16663883. The next prime is 16663963. The reversal of 16663930 is 3936661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14386849 + 2277081 = 3793^2 + 1509^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833187 + ... + 833206.

Almost surely, 2^16663930 is an apocalyptic number.

16663930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16663930 is a deficient number, since it is larger than the sum of its proper divisors (13331162).

16663930 is a wasteful number, since it uses less digits than its factorization.

16663930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666400.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 16663930 is about 4082.1477190322. The cubic root of 16663930 is about 255.4224958094.

The spelling of 16663930 in words is "sixteen million, six hundred sixty-three thousand, nine hundred thirty".