16640983 has 16 divisors (see below), whose sum is σ = 18302400. Its totient is φ = 15079680.

The previous prime is 16640969. The next prime is 16640999. The reversal of 16640983 is 38904661.

It is a cyclic number.

It is not a de Polignac number, because 16640983 - 2⁵ = 16640951 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 (16640933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40483 + ... + 40891.

It is an arithmetic number, because the mean of its divisors is an integer number (1143900).

Almost surely, 2^16640983 is an apocalyptic number.

16640983 is a deficient number, since it is larger than the sum of its proper divisors (1661417).

16640983 is a wasteful number, since it uses less digits than its factorization.

16640983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 16640983 is about 4079.3360979454. The cubic root of 16640983 is about 255.3051991004.

The spelling of 16640983 in words is "sixteen million, six hundred forty thousand, nine hundred eighty-three".