66258272 has 24 divisors (see below), whose sum is σ = 134946000. Its totient is φ = 31986304.

The previous prime is 66258259. The next prime is 66258277. The reversal of 66258272 is 27285266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66258277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34772 + ... + 36627.

It is an arithmetic number, because the mean of its divisors is an integer number (5622750).

Almost surely, 2^66258272 is an apocalyptic number.

It is an amenable number.

66258272 is an abundant number, since it is smaller than the sum of its proper divisors (68687728).

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

66258272 is a wasteful number, since it uses less digits than its factorization.

66258272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71438 (or 71430 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 66258272 is about 8139.9184271097. The cubic root of 66258272 is about 404.6504569295.

The spelling of 66258272 in words is "sixty-six million, two hundred fifty-eight thousand, two hundred seventy-two".