66151600 has 30 divisors (see below), whose sum is σ = 158930180. Its totient is φ = 26460480.

The previous prime is 66151577. The next prime is 66151609. The reversal of 66151600 is 615166.

66151600 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (66151609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82290 + ... + 83089.

Almost surely, 2^66151600 is an apocalyptic number.

It is an amenable number.

66151600 is an abundant number, since it is smaller than the sum of its proper divisors (92778580).

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

66151600 is a wasteful number, since it uses less digits than its factorization.

66151600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165397 (or 165386 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 66151600 is about 8133.3633879226. The cubic root of 66151600 is about 404.4331856500.

Adding to 66151600 its reverse (615166), we get a palindrome (66766766).

The spelling of 66151600 in words is "sixty-six million, one hundred fifty-one thousand, six hundred".