16620983 has 2 divisors, whose sum is σ = 16620984. Its totient is φ = 16620982.

The previous prime is 16620971. The next prime is 16621013. The reversal of 16620983 is 38902661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16620983 - 2⁸ = 16620727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16620913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8310491 + 8310492.

It is an arithmetic number, because the mean of its divisors is an integer number (8310492).

Almost surely, 2^16620983 is an apocalyptic number.

16620983 is a deficient number, since it is larger than the sum of its proper divisors (1).

16620983 is an equidigital number, since it uses as much as digits as its factorization.

16620983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 16620983 is about 4076.8839816703. The cubic root of 16620983 is about 255.2028784033.

The spelling of 16620983 in words is "sixteen million, six hundred twenty thousand, nine hundred eighty-three".