16536994 has 4 divisors (see below), whose sum is σ = 24805494. Its totient is φ = 8268496.

The previous prime is 16536943. The next prime is 16537013. The reversal of 16536994 is 49963561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16524225 + 12769 = 4065^2 + 113^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16536994.

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 as a sum of consecutive naturals, namely, 4134247 + ... + 4134250.

Almost surely, 2^16536994 is an apocalyptic number.

16536994 is a deficient number, since it is larger than the sum of its proper divisors (8268500).

16536994 is an equidigital number, since it uses as much as digits as its factorization.

16536994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8268499.

The product of its digits is 174960, while the sum is 43.

The square root of 16536994 is about 4066.5702994046. The cubic root of 16536994 is about 254.7722893498.

The spelling of 16536994 in words is "sixteen million, five hundred thirty-six thousand, nine hundred ninety-four".