16864111 has 4 divisors (see below), whose sum is σ = 18397224. Its totient is φ = 15331000.

The previous prime is 16864103. The next prime is 16864139. The reversal of 16864111 is 11146861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16864111 - 2³ = 16864103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16864111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16864171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766540 + ... + 766561.

It is an arithmetic number, because the mean of its divisors is an integer number (4599306).

Almost surely, 2^16864111 is an apocalyptic number.

16864111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16864111 is a deficient number, since it is larger than the sum of its proper divisors (1533113).

16864111 is a wasteful number, since it uses less digits than its factorization.

16864111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533112.

The product of its digits is 1152, while the sum is 28.

The square root of 16864111 is about 4106.5936005405. The cubic root of 16864111 is about 256.4412099733.

The spelling of 16864111 in words is "sixteen million, eight hundred sixty-four thousand, one hundred eleven".