66672200 has 48 divisors (see below), whose sum is σ = 177161280. Its totient is φ = 22858560.

The previous prime is 66672173. The next prime is 66672217. The reversal of 66672200 is 227666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22412 + ... + 25211.

It is an arithmetic number, because the mean of its divisors is an integer number (3690860).

Almost surely, 2^66672200 is an apocalyptic number.

It is an amenable number.

66672200 is an abundant number, since it is smaller than the sum of its proper divisors (110489080).

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

66672200 is a wasteful number, since it uses less digits than its factorization.

66672200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47646 (or 47637 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 66672200 is about 8165.3046483276. The cubic root of 66672200 is about 405.4913510115.

Adding to 66672200 its reverse (227666), we get a palindrome (66899866).

The spelling of 66672200 in words is "sixty-six million, six hundred seventy-two thousand, two hundred".