66672176 has 20 divisors (see below), whose sum is σ = 129413592. Its totient is φ = 33275136.

The previous prime is 66672173. The next prime is 66672217. The reversal of 66672176 is 67127666.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (66672173) 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, 5975 + ... + 13001.

Almost surely, 2^66672176 is an apocalyptic number.

It is an amenable number.

66672176 is a deficient number, since it is larger than the sum of its proper divisors (62741416).

66672176 is a wasteful number, since it uses less digits than its factorization.

66672176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7628 (or 7622 counting only the distinct ones).

The product of its digits is 127008, while the sum is 41.

The square root of 66672176 is about 8165.3031786946. The cubic root of 66672176 is about 405.4913023566.

The spelling of 66672176 in words is "sixty-six million, six hundred seventy-two thousand, one hundred seventy-six".