16663340 has 24 divisors (see below), whose sum is σ = 35337120. Its totient is φ = 6599808.

The previous prime is 16663321. The next prime is 16663351. The reversal of 16663340 is 4336661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1985 + ... + 6104.

It is an arithmetic number, because the mean of its divisors is an integer number (1472380).

Almost surely, 2^16663340 is an apocalyptic number.

16663340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16663340 is an abundant number, since it is smaller than the sum of its proper divisors (18673780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16663340 is a wasteful number, since it uses less digits than its factorization.

16663340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8201 (or 8199 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 16663340 is about 4082.0754525119. The cubic root of 16663340 is about 255.4194812934.

The spelling of 16663340 in words is "sixteen million, six hundred sixty-three thousand, three hundred forty".