66270650 has 24 divisors (see below), whose sum is σ = 123588444. Its totient is φ = 26438400.

The previous prime is 66270649. The next prime is 66270707. The reversal of 66270650 is 5607266.

It can be written as a sum of positive squares in 6 ways, for example, as 27867841 + 38402809 = 5279^2 + 6197^2 .

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20120 + ... + 23180.

Almost surely, 2^66270650 is an apocalyptic number.

66270650 is a deficient number, since it is larger than the sum of its proper divisors (57317794).

66270650 is a wasteful number, since it uses less digits than its factorization.

66270650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506 (or 3501 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 66270650 is about 8140.6787186327. The cubic root of 66270650 is about 404.6756535393.

The spelling of 66270650 in words is "sixty-six million, two hundred seventy thousand, six hundred fifty".