83666442 has 8 divisors (see below), whose sum is σ = 167332896. Its totient is φ = 27888812.

The previous prime is 83666419. The next prime is 83666447. The reversal of 83666442 is 24466638.

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

83666442 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 83666442.

It is not an unprimeable number, because it can be changed into a prime (83666447) 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, 6972198 + ... + 6972209.

It is an arithmetic number, because the mean of its divisors is an integer number (20916612).

Almost surely, 2^83666442 is an apocalyptic number.

83666442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

83666442 is a wasteful number, since it uses less digits than its factorization.

83666442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13944412.

The product of its digits is 165888, while the sum is 39.

The square root of 83666442 is about 9146.9362083705. The cubic root of 83666442 is about 437.3714530638.

The spelling of 83666442 in words is "eighty-three million, six hundred sixty-six thousand, four hundred forty-two".