66040752 has 40 divisors (see below), whose sum is σ = 170904240. Its totient is φ = 21975040.

The previous prime is 66040747. The next prime is 66040763. The reversal of 66040752 is 25704066.

It is a super-2 number, since 2×66040752² = 8722761849451008, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43852 + ... + 45332.

It is an arithmetic number, because the mean of its divisors is an integer number (4272606).

Almost surely, 2^66040752 is an apocalyptic number.

It is an amenable number.

66040752 is an abundant number, since it is smaller than the sum of its proper divisors (104863488).

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

66040752 is a wasteful number, since it uses less digits than its factorization.

66040752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421 (or 2415 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 66040752 is about 8126.5461298143. The cubic root of 66040752 is about 404.2071610163.

The spelling of 66040752 in words is "sixty-six million, forty thousand, seven hundred fifty-two".