2668990 has 8 divisors (see below), whose sum is σ = 4804200. Its totient is φ = 1067592.

The previous prime is 2668931. The next prime is 2668993. The reversal of 2668990 is 998662.

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 (2668993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133440 + ... + 133459.

It is an arithmetic number, because the mean of its divisors is an integer number (600525).

2^2668990 is an apocalyptic number.

2668990 is a deficient number, since it is larger than the sum of its proper divisors (2135210).

2668990 is a wasteful number, since it uses less digits than its factorization.

2668990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266906.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 2668990 is about 1633.7043796232. The cubic root of 2668990 is about 138.7125159139.

The spelling of 2668990 in words is "two million, six hundred sixty-eight thousand, nine hundred ninety".