66722882 has 4 divisors (see below), whose sum is σ = 100084326. Its totient is φ = 33361440.

The previous prime is 66722861. The next prime is 66722891. The reversal of 66722882 is 28822766.

66722882 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 34562641 + 32160241 = 5879^2 + 5671^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16680719 + ... + 16680722.

Almost surely, 2^66722882 is an apocalyptic number.

66722882 is a deficient number, since it is larger than the sum of its proper divisors (33361444).

66722882 is a wasteful number, since it uses less digits than its factorization.

66722882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33361443.

The product of its digits is 129024, while the sum is 41.

The square root of 66722882 is about 8168.4075559438. The cubic root of 66722882 is about 405.5940720228.

The spelling of 66722882 in words is "sixty-six million, seven hundred twenty-two thousand, eight hundred eighty-two".