66323964 has 24 divisors (see below), whose sum is σ = 176864128. Its totient is φ = 18949680.

The previous prime is 66323963. The next prime is 66323969. The reversal of 66323964 is 46932366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66323963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394702 + ... + 394869.

Almost surely, 2^66323964 is an apocalyptic number.

It is an amenable number.

66323964 is an abundant number, since it is smaller than the sum of its proper divisors (110540164).

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

66323964 is a wasteful number, since it uses less digits than its factorization.

66323964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789585 (or 789583 counting only the distinct ones).

The product of its digits is 139968, while the sum is 39.

The square root of 66323964 is about 8143.9526030055. The cubic root of 66323964 is about 404.7841434706.

The spelling of 66323964 in words is "sixty-six million, three hundred twenty-three thousand, nine hundred sixty-four".