66466456 has 32 divisors (see below), whose sum is σ = 143748000. Its totient is φ = 28221696.

The previous prime is 66466451. The next prime is 66466457. The reversal of 66466456 is 65466466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66466451) 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, 660 + ... + 11548.

It is an arithmetic number, because the mean of its divisors is an integer number (4492125).

Almost surely, 2^66466456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66466456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71874000).

66466456 is an abundant number, since it is smaller than the sum of its proper divisors (77281544).

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

66466456 is a wasteful number, since it uses less digits than its factorization.

66466456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11011 (or 11007 counting only the distinct ones).

The product of its digits is 622080, while the sum is 43.

The square root of 66466456 is about 8152.6962411217. The cubic root of 66466456 is about 405.0738187854.

The spelling of 66466456 in words is "sixty-six million, four hundred sixty-six thousand, four hundred fifty-six".