842988666 has 32 divisors (see below), whose sum is σ = 1816835328. Its totient is φ = 259214400.

The previous prime is 842988661. The next prime is 842988689. The reversal of 842988666 is 666889248.

It is not an unprimeable number, because it can be changed into a prime (842988661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181080 + ... + 185676.

It is an arithmetic number, because the mean of its divisors is an integer number (56776104).

Almost surely, 2^842988666 is an apocalyptic number.

842988666 is an abundant number, since it is smaller than the sum of its proper divisors (973846662).

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

842988666 is a wasteful number, since it uses less digits than its factorization.

842988666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6966.

The product of its digits is 7962624, while the sum is 57.

The square root of 842988666 is about 29034.2670994120. The cubic root of 842988666 is about 944.6564883439.

The spelling of 842988666 in words is "eight hundred forty-two million, nine hundred eighty-eight thousand, six hundred sixty-six".