66015126 has 24 divisors (see below), whose sum is σ = 143390520. Its totient is φ = 21950016.

The previous prime is 66015121. The next prime is 66015133. The reversal of 66015126 is 62151066.

It is a happy number.

66015126 is a `hidden beast` number, since 6 + 601 + 51 + 2 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 66015126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66015121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3166 + ... + 11918.

It is an arithmetic number, because the mean of its divisors is an integer number (5974605).

Almost surely, 2^66015126 is an apocalyptic number.

66015126 is an abundant number, since it is smaller than the sum of its proper divisors (77375394).

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

66015126 is a wasteful number, since it uses less digits than its factorization.

66015126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9180 (or 9177 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 66015126 is about 8124.9692922497. The cubic root of 66015126 is about 404.1548723286.

The spelling of 66015126 in words is "sixty-six million, fifteen thousand, one hundred twenty-six".