16506923 has 2 divisors, whose sum is σ = 16506924. Its totient is φ = 16506922.

The previous prime is 16506907. The next prime is 16506937. The reversal of 16506923 is 32960561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16506923 - 2⁴ = 16506907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16506923.

It is not a weakly prime, because it can be changed into another prime (16506943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8253461 + 8253462.

It is an arithmetic number, because the mean of its divisors is an integer number (8253462).

Almost surely, 2^16506923 is an apocalyptic number.

16506923 is a deficient number, since it is larger than the sum of its proper divisors (1).

16506923 is an equidigital number, since it uses as much as digits as its factorization.

16506923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 16506923 is about 4062.8712753421. The cubic root of 16506923 is about 254.6177690065.

The spelling of 16506923 in words is "sixteen million, five hundred six thousand, nine hundred twenty-three".