66371612 has 12 divisors (see below), whose sum is σ = 116294640. Its totient is φ = 33144576.

The previous prime is 66371611. The next prime is 66371639. The reversal of 66371612 is 21617366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66371611) 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, 6533 + ... + 13244.

It is an arithmetic number, because the mean of its divisors is an integer number (9691220).

Almost surely, 2^66371612 is an apocalyptic number.

It is an amenable number.

66371612 is a deficient number, since it is larger than the sum of its proper divisors (49923028).

66371612 is a wasteful number, since it uses less digits than its factorization.

66371612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20620 (or 20618 counting only the distinct ones).

The product of its digits is 9072, while the sum is 32.

The square root of 66371612 is about 8146.8774386264. The cubic root of 66371612 is about 404.8810543348.

Adding to 66371612 its reverse (21617366), we get a palindrome (87988978).

The spelling of 66371612 in words is "sixty-six million, three hundred seventy-one thousand, six hundred twelve".