66188082 has 16 divisors (see below), whose sum is σ = 133420032. Its totient is φ = 21888720.

The previous prime is 66188081. The next prime is 66188093. The reversal of 66188082 is 28088166.

It is a self number, because there is not a number n which added to its sum of digits gives 66188082.

It is not an unprimeable number, because it can be changed into a prime (66188081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42669 + ... + 44192.

It is an arithmetic number, because the mean of its divisors is an integer number (8338752).

Almost surely, 2^66188082 is an apocalyptic number.

66188082 is an abundant number, since it is smaller than the sum of its proper divisors (67231950).

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

66188082 is a wasteful number, since it uses less digits than its factorization.

66188082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86993.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 66188082 is about 8135.6058164097. The cubic root of 66188082 is about 404.5075190497.

The spelling of 66188082 in words is "sixty-six million, one hundred eighty-eight thousand, eighty-two".