66750268 has 36 divisors (see below), whose sum is σ = 133172760. Its totient is φ = 29180736.

The previous prime is 66750253. The next prime is 66750269. The reversal of 66750268 is 86205766.

It is a self number, because there is not a number n which added to its sum of digits gives 66750268.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66750269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10246 + ... + 15442.

Almost surely, 2^66750268 is an apocalyptic number.

It is an amenable number.

66750268 is a deficient number, since it is larger than the sum of its proper divisors (66422492).

66750268 is a wasteful number, since it uses less digits than its factorization.

66750268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5246 (or 5231 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 66750268 is about 8170.0837205013. The cubic root of 66750268 is about 405.6495556370.

The spelling of 66750268 in words is "sixty-six million, seven hundred fifty thousand, two hundred sixty-eight".