66125744 has 40 divisors (see below), whose sum is σ = 131991552. Its totient is φ = 32074560.

The previous prime is 66125707. The next prime is 66125749. The reversal of 66125744 is 44752166.

It is a super-2 number, since 2×66125744² = 8745228039107072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66125749) by changing a digit.

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, 153209 + ... + 153639.

Almost surely, 2^66125744 is an apocalyptic number.

It is an amenable number.

66125744 is a deficient number, since it is larger than the sum of its proper divisors (65865808).

66125744 is a wasteful number, since it uses less digits than its factorization.

66125744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 699 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 66125744 is about 8131.7737302510. The cubic root of 66125744 is about 404.3804865611.

The spelling of 66125744 in words is "sixty-six million, one hundred twenty-five thousand, seven hundred forty-four".