66573772 has 12 divisors (see below), whose sum is σ = 117343240. Its totient is φ = 33047136.

The previous prime is 66573733. The next prime is 66573797. The reversal of 66573772 is 27737566.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59313 + ... + 60424.

Almost surely, 2^66573772 is an apocalyptic number.

It is an amenable number.

66573772 is a deficient number, since it is larger than the sum of its proper divisors (50769468).

66573772 is a wasteful number, since it uses less digits than its factorization.

66573772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119880 (or 119878 counting only the distinct ones).

The product of its digits is 370440, while the sum is 43.

The square root of 66573772 is about 8159.2752129095. The cubic root of 66573772 is about 405.2917107850.

The spelling of 66573772 in words is "sixty-six million, five hundred seventy-three thousand, seven hundred seventy-two".