16806789 has 6 divisors (see below), whose sum is σ = 24276486. Its totient is φ = 11204520.

The previous prime is 16806787. The next prime is 16806791. The reversal of 16806789 is 98760861.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16806787) and next prime (16806791).

It can be written as a sum of positive squares in only one way, i.e., 15444900 + 1361889 = 3930^2 + 1167^2 .

It is not a de Polignac number, because 16806789 - 2¹ = 16806787 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16806787) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 933702 + ... + 933719.

It is an arithmetic number, because the mean of its divisors is an integer number (4046081).

Almost surely, 2^16806789 is an apocalyptic number.

It is an amenable number.

16806789 is a deficient number, since it is larger than the sum of its proper divisors (7469697).

16806789 is a wasteful number, since it uses less digits than its factorization.

16806789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867427 (or 1867424 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 16806789 is about 4099.6083959325. The cubic root of 16806789 is about 256.1503277639.

The spelling of 16806789 in words is "sixteen million, eight hundred six thousand, seven hundred eighty-nine".