11421666 has 24 divisors (see below), whose sum is σ = 24880284. Its totient is φ = 3786720.

The previous prime is 11421661. The next prime is 11421673. The reversal of 11421666 is 66612411.

It can be written as a sum of positive squares in 2 ways, for example, as 9126441 + 2295225 = 3021^2 + 1515^2 .

It is not an unprimeable number, because it can be changed into a prime (11421661) 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 11 ways as a sum of consecutive naturals, for example, 1936 + ... + 5156.

Almost surely, 2^11421666 is an apocalyptic number.

11421666 is an abundant number, since it is smaller than the sum of its proper divisors (13458618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11421666 is a wasteful number, since it uses less digits than its factorization.

11421666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3426 (or 3423 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 11421666 is about 3379.5955379305. The cubic root of 11421666 is about 225.2041998066.

The spelling of 11421666 in words is "eleven million, four hundred twenty-one thousand, six hundred sixty-six".