16620343 has 2 divisors, whose sum is σ = 16620344. Its totient is φ = 16620342.

The previous prime is 16620337. The next prime is 16620347. The reversal of 16620343 is 34302661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16620343 - 2¹³ = 16612151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16620347) 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 as a sum of consecutive naturals, namely, 8310171 + 8310172.

It is an arithmetic number, because the mean of its divisors is an integer number (8310172).

Almost surely, 2^16620343 is an apocalyptic number.

16620343 is a deficient number, since it is larger than the sum of its proper divisors (1).

16620343 is an equidigital number, since it uses as much as digits as its factorization.

16620343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 16620343 is about 4076.8054895960. The cubic root of 16620343 is about 255.1996027860.

The spelling of 16620343 in words is "sixteen million, six hundred twenty thousand, three hundred forty-three".