66272612 has 24 divisors (see below), whose sum is σ = 134365056. Its totient is φ = 28012608.

The previous prime is 66272611. The next prime is 66272617. The reversal of 66272612 is 21627266.

It is not an unprimeable number, because it can be changed into a prime (66272611) 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, 14168 + ... + 18255.

It is an arithmetic number, because the mean of its divisors is an integer number (5598544).

Almost surely, 2^66272612 is an apocalyptic number.

It is an amenable number.

66272612 is an abundant number, since it is smaller than the sum of its proper divisors (68092444).

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

66272612 is a wasteful number, since it uses less digits than its factorization.

66272612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32507 (or 32505 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 66272612 is about 8140.7992236635. The cubic root of 66272612 is about 404.6796470910.

Adding to 66272612 its reverse (21627266), we get a palindrome (87899878).

The spelling of 66272612 in words is "sixty-six million, two hundred seventy-two thousand, six hundred twelve".