16699445 has 12 divisors (see below), whose sum is σ = 23311404. Its totient is φ = 11450880.

The previous prime is 16699433. The next prime is 16699451. The reversal of 16699445 is 54499661.

It can be written as a sum of positive squares in 2 ways, for example, as 10099684 + 6599761 = 3178^2 + 2569^2 .

It is not a de Polignac number, because 16699445 - 2¹⁴ = 16683061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16699396 and 16699405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33836 + ... + 34325.

It is an arithmetic number, because the mean of its divisors is an integer number (1942617).

Almost surely, 2^16699445 is an apocalyptic number.

It is an amenable number.

16699445 is a deficient number, since it is larger than the sum of its proper divisors (6611959).

16699445 is an equidigital number, since it uses as much as digits as its factorization.

16699445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68180 (or 68173 counting only the distinct ones).

The product of its digits is 233280, while the sum is 44.

The square root of 16699445 is about 4086.4954423075. The cubic root of 16699445 is about 255.6038234460.

The spelling of 16699445 in words is "sixteen million, six hundred ninety-nine thousand, four hundred forty-five".