16699418 has 8 divisors (see below), whose sum is σ = 25912980. Its totient is φ = 8061760.

The previous prime is 16699393. The next prime is 16699427. The reversal of 16699418 is 81499661.

It can be written as a sum of positive squares in 2 ways, for example, as 14645929 + 2053489 = 3827^2 + 1433^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143903 + ... + 144018.

Almost surely, 2^16699418 is an apocalyptic number.

16699418 is a deficient number, since it is larger than the sum of its proper divisors (9213562).

16699418 is a wasteful number, since it uses less digits than its factorization.

16699418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287952.

The product of its digits is 93312, while the sum is 44.

The square root of 16699418 is about 4086.4921387420. The cubic root of 16699418 is about 255.6036856908.

The spelling of 16699418 in words is "sixteen million, six hundred ninety-nine thousand, four hundred eighteen".