16868817 has 48 divisors (see below), whose sum is σ = 29632512. Its totient is φ = 9389520.

The previous prime is 16868801. The next prime is 16868833. The reversal of 16868817 is 71886861.

It is an interprime number because it is at equal distance from previous prime (16868801) and next prime (16868833).

It is not a de Polignac number, because 16868817 - 2⁴ = 16868801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16868897) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79842 + ... + 80052.

It is an arithmetic number, because the mean of its divisors is an integer number (617344).

Almost surely, 2^16868817 is an apocalyptic number.

It is an amenable number.

16868817 is a deficient number, since it is larger than the sum of its proper divisors (12763695).

16868817 is an equidigital number, since it uses as much as digits as its factorization.

16868817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 268 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 16868817 is about 4107.1665415466. The cubic root of 16868817 is about 256.4650614153.

The spelling of 16868817 in words is "sixteen million, eight hundred sixty-eight thousand, eight hundred seventeen".