66275000 has 96 divisors (see below), whose sum is σ = 170145360. Its totient is φ = 24000000.

The previous prime is 66274991. The next prime is 66275017. The reversal of 66275000 is 57266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274880 + ... + 275120.

Almost surely, 2^66275000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66275000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85072680).

66275000 is an abundant number, since it is smaller than the sum of its proper divisors (103870360).

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

66275000 is a wasteful number, since it uses less digits than its factorization.

66275000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 66275000 is about 8140.9458909883. The cubic root of 66275000 is about 404.6845076378.

The spelling of 66275000 in words is "sixty-six million, two hundred seventy-five thousand".