16800861 has 32 divisors (see below), whose sum is σ = 28136448. Its totient is φ = 8663040.

The previous prime is 16800829. The next prime is 16800869.

16800861 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 16800861 - 2⁵ = 16800829 is a prime.

16800861 is a modest number, since divided by 861 gives 168 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16800869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59226 + ... + 59508.

It is an arithmetic number, because the mean of its divisors is an integer number (879264).

Almost surely, 2^16800861 is an apocalyptic number.

16800861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16800861 is a deficient number, since it is larger than the sum of its proper divisors (11335587).

16800861 is a wasteful number, since it uses less digits than its factorization.

16800861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 16800861 is about 4098.8853362835. The cubic root of 16800861 is about 256.1202082349.

The spelling of 16800861 in words is "sixteen million, eight hundred thousand, eight hundred sixty-one".