66517532 has 48 divisors (see below), whose sum is σ = 129276000. Its totient is φ = 29804544.

The previous prime is 66517531. The next prime is 66517543. The reversal of 66517532 is 23571566.

It is a junction number, because it is equal to n+sod(n) for n = 66517492 and 66517501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66517531) 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 15 ways as a sum of consecutive naturals, for example, 175319 + ... + 175697.

It is an arithmetic number, because the mean of its divisors is an integer number (2693250).

Almost surely, 2^66517532 is an apocalyptic number.

It is an amenable number.

66517532 is a deficient number, since it is larger than the sum of its proper divisors (62758468).

66517532 is a wasteful number, since it uses less digits than its factorization.

66517532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 516 counting only the distinct ones).

The product of its digits is 37800, while the sum is 35.

The square root of 66517532 is about 8155.8281001993. The cubic root of 66517532 is about 405.1775515766.

The spelling of 66517532 in words is "sixty-six million, five hundred seventeen thousand, five hundred thirty-two".