66856150 has 24 divisors (see below), whose sum is σ = 128366784. Its totient is φ = 25879200.

The previous prime is 66856129. The next prime is 66856157. The reversal of 66856150 is 5165866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66856157) 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, 20017 + ... + 23116.

It is an arithmetic number, because the mean of its divisors is an integer number (5348616).

Almost surely, 2^66856150 is an apocalyptic number.

66856150 is a deficient number, since it is larger than the sum of its proper divisors (61510634).

66856150 is a wasteful number, since it uses less digits than its factorization.

66856150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43176 (or 43171 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 66856150 is about 8176.5610130421. The cubic root of 66856150 is about 405.8639282896.

The spelling of 66856150 in words is "sixty-six million, eight hundred fifty-six thousand, one hundred fifty".