66572882 has 4 divisors (see below), whose sum is σ = 99859326. Its totient is φ = 33286440.

The previous prime is 66572813. The next prime is 66572887. The reversal of 66572882 is 28827566.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 63984001 + 2588881 = 7999^2 + 1609^2 .

It is not an unprimeable number, because it can be changed into a prime (66572887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16643219 + ... + 16643222.

Almost surely, 2^66572882 is an apocalyptic number.

66572882 is a deficient number, since it is larger than the sum of its proper divisors (33286444).

66572882 is a wasteful number, since it uses less digits than its factorization.

66572882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33286443.

The product of its digits is 322560, while the sum is 44.

The square root of 66572882 is about 8159.2206735693. The cubic root of 66572882 is about 405.2899047122.

The spelling of 66572882 in words is "sixty-six million, five hundred seventy-two thousand, eight hundred eighty-two".