66528706 has 8 divisors (see below), whose sum is σ = 100233360. Its totient is φ = 33117588.

The previous prime is 66528703. The next prime is 66528713. The reversal of 66528706 is 60782566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66528703) 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, 72816 + ... + 73723.

It is an arithmetic number, because the mean of its divisors is an integer number (12529170).

Almost surely, 2^66528706 is an apocalyptic number.

66528706 is a deficient number, since it is larger than the sum of its proper divisors (33704654).

66528706 is a wasteful number, since it uses less digits than its factorization.

66528706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146768.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 66528706 is about 8156.5131030361. The cubic root of 66528706 is about 405.2002383297.

The spelling of 66528706 in words is "sixty-six million, five hundred twenty-eight thousand, seven hundred six".