2168387 has 4 divisors (see below), whose sum is σ = 2335200. Its totient is φ = 2001576.

The previous prime is 2168377. The next prime is 2168399. The reversal of 2168387 is 7838612.

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 2168387 - 2⁶ = 2168323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2168317) 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, 83387 + ... + 83412.

It is an arithmetic number, because the mean of its divisors is an integer number (583800).

2^2168387 is an apocalyptic number.

2168387 is a deficient number, since it is larger than the sum of its proper divisors (166813).

2168387 is a wasteful number, since it uses less digits than its factorization.

2168387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166812.

The product of its digits is 16128, while the sum is 35.

The square root of 2168387 is about 1472.5443966142. The cubic root of 2168387 is about 129.4331731354.

The spelling of 2168387 in words is "two million, one hundred sixty-eight thousand, three hundred eighty-seven".