2668389 has 8 divisors (see below), whose sum is σ = 3566112. Its totient is φ = 1774800.

The previous prime is 2668363. The next prime is 2668399. The reversal of 2668389 is 9838662.

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

It is not a de Polignac number, because 2668389 - 2⁵ = 2668357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2668389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668399) 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, 1114 + ... + 2564.

It is an arithmetic number, because the mean of its divisors is an integer number (445764).

2^2668389 is an apocalyptic number.

It is an amenable number.

2668389 is a deficient number, since it is larger than the sum of its proper divisors (897723).

2668389 is a wasteful number, since it uses less digits than its factorization.

2668389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067.

The product of its digits is 124416, while the sum is 42.

The square root of 2668389 is about 1633.5204314608. The cubic root of 2668389 is about 138.7021034258.

The spelling of 2668389 in words is "two million, six hundred sixty-eight thousand, three hundred eighty-nine".