66782285622 has 160 divisors (see below), whose sum is σ = 170869036800. Its totient is φ = 19325241792.

The previous prime is 66782285621. The next prime is 66782285627. The reversal of 66782285622 is 22658228766.

It is a happy number.

66782285622 is a `hidden beast` number, since 6 + 6 + 7 + 8 + 2 + 2 + 8 + 5 + 622 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66782285621) 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 79 ways as a sum of consecutive naturals, for example, 5555943 + ... + 5567949.

It is an arithmetic number, because the mean of its divisors is an integer number (1067931480).

Almost surely, 2^66782285622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66782285622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85434518400).

66782285622 is an abundant number, since it is smaller than the sum of its proper divisors (104086751178).

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

66782285622 is a wasteful number, since it uses less digits than its factorization.

66782285622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12192 (or 12183 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The spelling of 66782285622 in words is "sixty-six billion, seven hundred eighty-two million, two hundred eighty-five thousand, six hundred twenty-two".