2666422 has 16 divisors (see below), whose sum is σ = 4593600. Its totient is φ = 1148040.

The previous prime is 2666393. The next prime is 2666423. The reversal of 2666422 is 2246662.

It is a super-4 number, since 4×2666422⁴ (a number of 27 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666423) 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 7 ways as a sum of consecutive naturals, for example, 2772 + ... + 3607.

It is an arithmetic number, because the mean of its divisors is an integer number (287100).

2^2666422 is an apocalyptic number.

2666422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2666422 is a deficient number, since it is larger than the sum of its proper divisors (1927178).

2666422 is a wasteful number, since it uses less digits than its factorization.

2666422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6411.

The product of its digits is 6912, while the sum is 28.

The square root of 2666422 is about 1632.9182465757. The cubic root of 2666422 is about 138.6680136806.

The spelling of 2666422 in words is "two million, six hundred sixty-six thousand, four hundred twenty-two".