66507652 has 12 divisors (see below), whose sum is σ = 117277776. Its totient is φ = 32999720.

The previous prime is 66507647. The next prime is 66507659. The reversal of 66507652 is 25670566.

It is not an unprimeable number, because it can be changed into a prime (66507659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62938 + ... + 63985.

It is an arithmetic number, because the mean of its divisors is an integer number (9773148).

Almost surely, 2^66507652 is an apocalyptic number.

It is an amenable number.

66507652 is a deficient number, since it is larger than the sum of its proper divisors (50770124).

66507652 is a wasteful number, since it uses less digits than its factorization.

66507652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127058 (or 127056 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 66507652 is about 8155.2223758767. Note that the first 3 decimals coincide. The cubic root of 66507652 is about 405.1574899362.

The spelling of 66507652 in words is "sixty-six million, five hundred seven thousand, six hundred fifty-two".