16640063 has 16 divisors (see below), whose sum is σ = 19180800. Its totient is φ = 14287680.

The previous prime is 16640051. The next prime is 16640069. The reversal of 16640063 is 36004661.

It is not a de Polignac number, because 16640063 - 2⁸ = 16639807 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 (16640069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22148 + ... + 22886.

It is an arithmetic number, because the mean of its divisors is an integer number (1198800).

Almost surely, 2^16640063 is an apocalyptic number.

16640063 is a deficient number, since it is larger than the sum of its proper divisors (2540737).

16640063 is a wasteful number, since it uses less digits than its factorization.

16640063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 16640063 is about 4079.2233329397. The cubic root of 16640063 is about 255.3004941477.

The spelling of 16640063 in words is "sixteen million, six hundred forty thousand, sixty-three".