66740200 has 24 divisors (see below), whose sum is σ = 155171430. Its totient is φ = 26696000.

The previous prime is 66740183. The next prime is 66740207. The reversal of 66740200 is 204766.

It can be written as a sum of positive squares in 3 ways, for example, as 62504836 + 4235364 = 7906^2 + 2058^2 .

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 (66740207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166651 + ... + 167050.

Almost surely, 2^66740200 is an apocalyptic number.

It is an amenable number.

66740200 is an abundant number, since it is smaller than the sum of its proper divisors (88431230).

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

66740200 is a wasteful number, since it uses less digits than its factorization.

66740200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333717 (or 333708 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 66740200 is about 8169.4675469090. The cubic root of 66740200 is about 405.6291597884.

Adding to 66740200 its reverse (204766), we get a palindrome (66944966).

The spelling of 66740200 in words is "sixty-six million, seven hundred forty thousand, two hundred".