16864627 has 4 divisors (see below), whose sum is σ = 18161920. Its totient is φ = 15567336.

The previous prime is 16864621. The next prime is 16864633. The reversal of 16864627 is 72646861.

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

It is an interprime number because it is at equal distance from previous prime (16864621) and next prime (16864633).

It is a cyclic number.

It is not a de Polignac number, because 16864627 - 2¹⁹ = 16340339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16864627.

It is not an unprimeable number, because it can be changed into a prime (16864621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648627 + ... + 648652.

It is an arithmetic number, because the mean of its divisors is an integer number (4540480).

Almost surely, 2^16864627 is an apocalyptic number.

16864627 is a deficient number, since it is larger than the sum of its proper divisors (1297293).

16864627 is a wasteful number, since it uses less digits than its factorization.

16864627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297292.

The product of its digits is 96768, while the sum is 40.

The square root of 16864627 is about 4106.6564258530. The cubic root of 16864627 is about 256.4438254351.

The spelling of 16864627 in words is "sixteen million, eight hundred sixty-four thousand, six hundred twenty-seven".