16609693 has 2 divisors, whose sum is σ = 16609694. Its totient is φ = 16609692.

The previous prime is 16609687. The next prime is 16609699. The reversal of 16609693 is 39690661.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (16609687) and next prime (16609699).

It can be written as a sum of positive squares in only one way, i.e., 13860729 + 2748964 = 3723^2 + 1658^2 .

It is a cyclic number.

It is not a de Polignac number, because 16609693 - 2²¹ = 14512541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16609699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8304846 + 8304847.

It is an arithmetic number, because the mean of its divisors is an integer number (8304847).

Almost surely, 2^16609693 is an apocalyptic number.

It is an amenable number.

16609693 is a deficient number, since it is larger than the sum of its proper divisors (1).

16609693 is an equidigital number, since it uses as much as digits as its factorization.

16609693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 16609693 is about 4075.4991105385. The cubic root of 16609693 is about 255.1450821202.

The spelling of 16609693 in words is "sixteen million, six hundred nine thousand, six hundred ninety-three".