66528086 has 8 divisors (see below), whose sum is σ = 99927264. Its totient is φ = 33219000.

The previous prime is 66528083. The next prime is 66528097. The reversal of 66528086 is 68082566.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66528083) 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, 20645 + ... + 23648.

It is an arithmetic number, because the mean of its divisors is an integer number (12490908).

Almost surely, 2^66528086 is an apocalyptic number.

66528086 is a deficient number, since it is larger than the sum of its proper divisors (33399178).

66528086 is a wasteful number, since it uses less digits than its factorization.

66528086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45046.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 66528086 is about 8156.4750965107. The cubic root of 66528086 is about 405.1989796002.

The spelling of 66528086 in words is "sixty-six million, five hundred twenty-eight thousand, eighty-six".