66327772 has 18 divisors (see below), whose sum is σ = 135024792. Its totient is φ = 28426104.

The previous prime is 66327743. The next prime is 66327773. The reversal of 66327772 is 27772366.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66327773) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 169008 + ... + 169399.

Almost surely, 2^66327772 is an apocalyptic number.

It is an amenable number.

66327772 is an abundant number, since it is smaller than the sum of its proper divisors (68697020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66327772 is a wasteful number, since it uses less digits than its factorization.

66327772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338425 (or 338416 counting only the distinct ones).

The product of its digits is 148176, while the sum is 40.

The square root of 66327772 is about 8144.1863927589. The cubic root of 66327772 is about 404.7918902358.

The spelling of 66327772 in words is "sixty-six million, three hundred twenty-seven thousand, seven hundred seventy-two".