66771060 has 48 divisors (see below), whose sum is σ = 188346816. Its totient is φ = 17673472.

The previous prime is 66771059. The next prime is 66771091. The reversal of 66771060 is 6017766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4159 + ... + 12281.

It is an arithmetic number, because the mean of its divisors is an integer number (3923892).

Almost surely, 2^66771060 is an apocalyptic number.

66771060 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66771060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94173408).

66771060 is an abundant number, since it is smaller than the sum of its proper divisors (121575756).

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

66771060 is a wasteful number, since it uses less digits than its factorization.

66771060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8272 (or 8270 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 66771060 is about 8171.3560686094. The cubic root of 66771060 is about 405.6916697749.

The spelling of 66771060 in words is "sixty-six million, seven hundred seventy-one thousand, sixty".