66466972 has 24 divisors (see below), whose sum is σ = 136653552. Its totient is φ = 27888000.

The previous prime is 66466937. The next prime is 66466973. The reversal of 66466972 is 27966466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66466973) 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, 57529 + ... + 58672.

It is an arithmetic number, because the mean of its divisors is an integer number (5693898).

Almost surely, 2^66466972 is an apocalyptic number.

It is an amenable number.

66466972 is an abundant number, since it is smaller than the sum of its proper divisors (70186580).

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

66466972 is a wasteful number, since it uses less digits than its factorization.

66466972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116229 (or 116227 counting only the distinct ones).

The product of its digits is 653184, while the sum is 46.

The square root of 66466972 is about 8152.7278870327. The cubic root of 66466972 is about 405.0748670211.

The spelling of 66466972 in words is "sixty-six million, four hundred sixty-six thousand, nine hundred seventy-two".