16223693 has 2 divisors, whose sum is σ = 16223694. Its totient is φ = 16223692.

The previous prime is 16223651. The next prime is 16223707. The reversal of 16223693 is 39632261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10738729 + 5484964 = 3277^2 + 2342^2 .

It is an emirp because it is prime and its reverse (39632261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16223693 - 2⁶ = 16223629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16223293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8111846 + 8111847.

It is an arithmetic number, because the mean of its divisors is an integer number (8111847).

Almost surely, 2^16223693 is an apocalyptic number.

It is an amenable number.

16223693 is a deficient number, since it is larger than the sum of its proper divisors (1).

16223693 is an equidigital number, since it uses as much as digits as its factorization.

16223693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 32.

The square root of 16223693 is about 4027.8645707124. The cubic root of 16223693 is about 253.1530941332.

The spelling of 16223693 in words is "sixteen million, two hundred twenty-three thousand, six hundred ninety-three".