66831350 has 24 divisors (see below), whose sum is σ = 128319168. Its totient is φ = 25869600.

The previous prime is 66831343. The next prime is 66831371. The reversal of 66831350 is 5313866.

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 congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20009 + ... + 23108.

It is an arithmetic number, because the mean of its divisors is an integer number (5346632).

Almost surely, 2^66831350 is an apocalyptic number.

66831350 is a deficient number, since it is larger than the sum of its proper divisors (61487818).

66831350 is a wasteful number, since it uses less digits than its factorization.

66831350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43160 (or 43155 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 66831350 is about 8175.0443423874. The cubic root of 66831350 is about 405.8137375928.

The spelling of 66831350 in words is "sixty-six million, eight hundred thirty-one thousand, three hundred fifty".