66764332 has 12 divisors (see below), whose sum is σ = 117353880. Its totient is φ = 33234656.

The previous prime is 66764323. The next prime is 66764339. The reversal of 66764332 is 23346766.

It is a junction number, because it is equal to n+sod(n) for n = 66764291 and 66764300.

It is not an unprimeable number, because it can be changed into a prime (66764339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35857 + ... + 37672.

It is an arithmetic number, because the mean of its divisors is an integer number (9779490).

Almost surely, 2^66764332 is an apocalyptic number.

It is an amenable number.

66764332 is a deficient number, since it is larger than the sum of its proper divisors (50589548).

66764332 is a wasteful number, since it uses less digits than its factorization.

66764332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73760 (or 73758 counting only the distinct ones).

The product of its digits is 108864, while the sum is 37.

The square root of 66764332 is about 8170.9443762640. The cubic root of 66764332 is about 405.6780431866.

The spelling of 66764332 in words is "sixty-six million, seven hundred sixty-four thousand, three hundred thirty-two".