16806465 has 24 divisors (see below), whose sum is σ = 31373160. Its totient is φ = 8273664.

The previous prime is 16806443. The next prime is 16806467. The reversal of 16806465 is 56460861.

16806465 is a `hidden beast` number, since 1 + 6 + 8 + 0 + 646 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 62001 + 16744464 = 249^2 + 4092^2 .

It is not a de Polignac number, because 16806465 - 2⁷ = 16806337 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16806467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13780 + ... + 14949.

It is an arithmetic number, because the mean of its divisors is an integer number (1307215).

Almost surely, 2^16806465 is an apocalyptic number.

16806465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16806465 is a deficient number, since it is larger than the sum of its proper divisors (14566695).

16806465 is a wasteful number, since it uses less digits than its factorization.

16806465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28753 (or 28750 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 16806465 is about 4099.5688797726. The cubic root of 16806465 is about 256.1486817378.

It can be divided in two parts, 16806 and 465, that added together give a palindrome (17271).

The spelling of 16806465 in words is "sixteen million, eight hundred six thousand, four hundred sixty-five".