16791623 has 2 divisors, whose sum is σ = 16791624. Its totient is φ = 16791622.

The previous prime is 16791601. The next prime is 16791637. The reversal of 16791623 is 32619761.

It is a strong prime.

It is an emirp because it is prime and its reverse (32619761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16791623 - 2¹² = 16787527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16791323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8395811 + 8395812.

It is an arithmetic number, because the mean of its divisors is an integer number (8395812).

Almost surely, 2^16791623 is an apocalyptic number.

16791623 is a deficient number, since it is larger than the sum of its proper divisors (1).

16791623 is an equidigital number, since it uses as much as digits as its factorization.

16791623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 35.

The square root of 16791623 is about 4097.7582896018. The cubic root of 16791623 is about 256.0732568262.

The spelling of 16791623 in words is "sixteen million, seven hundred ninety-one thousand, six hundred twenty-three".