16807864 has 8 divisors (see below), whose sum is σ = 31514760. Its totient is φ = 8403928.

The previous prime is 16807829. The next prime is 16807867. The reversal of 16807864 is 46870861.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16807867) 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 as a sum of consecutive naturals, namely, 1050484 + ... + 1050499.

It is an arithmetic number, because the mean of its divisors is an integer number (3939345).

Almost surely, 2^16807864 is an apocalyptic number.

It is an amenable number.

16807864 is a deficient number, since it is larger than the sum of its proper divisors (14706896).

16807864 is a wasteful number, since it uses less digits than its factorization.

16807864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100989 (or 2100985 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 16807864 is about 4099.7395039197. The cubic root of 16807864 is about 256.1557889644.

It can be divided in two parts, 16807 and 864, that added together give a palindrome (17671).

The spelling of 16807864 in words is "sixteen million, eight hundred seven thousand, eight hundred sixty-four".