2668390 has 8 divisors (see below), whose sum is σ = 4803120. Its totient is φ = 1067352.

The previous prime is 2668363. The next prime is 2668399. The reversal of 2668390 is 938662.

It is a happy number.

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

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 3 ways as a sum of consecutive naturals, for example, 133410 + ... + 133429.

It is an arithmetic number, because the mean of its divisors is an integer number (600390).

2^2668390 is an apocalyptic number.

2668390 is a deficient number, since it is larger than the sum of its proper divisors (2134730).

2668390 is a wasteful number, since it uses less digits than its factorization.

2668390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266846.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 2668390 is about 1633.5207375482. The cubic root of 2668390 is about 138.7021207523.

The spelling of 2668390 in words is "two million, six hundred sixty-eight thousand, three hundred ninety".