66380950 has 12 divisors (see below), whose sum is σ = 123468660. Its totient is φ = 26552360.

The previous prime is 66380947. The next prime is 66380957. The reversal of 66380950 is 5908366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66380957) 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, 663760 + ... + 663859.

It is an arithmetic number, because the mean of its divisors is an integer number (10289055).

Almost surely, 2^66380950 is an apocalyptic number.

66380950 is a deficient number, since it is larger than the sum of its proper divisors (57087710).

66380950 is a wasteful number, since it uses less digits than its factorization.

66380950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327631 (or 1327626 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 66380950 is about 8147.4505214822. The cubic root of 66380950 is about 404.9000413779.

The spelling of 66380950 in words is "sixty-six million, three hundred eighty thousand, nine hundred fifty".