16216699 has 4 divisors (see below), whose sum is σ = 16229080. Its totient is φ = 16204320.

The previous prime is 16216663. The next prime is 16216703. The reversal of 16216699 is 99661261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99661261 = 7 ⋅14237323.

It is a cyclic number.

It is not a de Polignac number, because 16216699 - 2²³ = 7828091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16216609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3957 + ... + 6934.

It is an arithmetic number, because the mean of its divisors is an integer number (4057270).

Almost surely, 2^16216699 is an apocalyptic number.

16216699 is a deficient number, since it is larger than the sum of its proper divisors (12381).

16216699 is a wasteful number, since it uses less digits than its factorization.

16216699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12380.

The product of its digits is 34992, while the sum is 40.

The square root of 16216699 is about 4026.9962751411. The cubic root of 16216699 is about 253.1167109819.

It can be divided in two parts, 162 and 16699, that added together give a palindrome (16861).

The spelling of 16216699 in words is "sixteen million, two hundred sixteen thousand, six hundred ninety-nine".