16880809 has 8 divisors (see below), whose sum is σ = 18495360. Its totient is φ = 15279600.

The previous prime is 16880803. The next prime is 16880839. The reversal of 16880809 is 90808861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16880809 - 2⁷ = 16880681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16880803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582 + ... + 5839.

It is an arithmetic number, because the mean of its divisors is an integer number (2311920).

Almost surely, 2^16880809 is an apocalyptic number.

It is an amenable number.

16880809 is a deficient number, since it is larger than the sum of its proper divisors (1614551).

16880809 is a wasteful number, since it uses less digits than its factorization.

16880809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6671.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 16880809 is about 4108.6261694148. The cubic root of 16880809 is about 256.5258204776.

It can be divided in two parts, 16880 and 809, that added together give a square (17689 = 133²).

The spelling of 16880809 in words is "sixteen million, eight hundred eighty thousand, eight hundred nine".