66431150 has 24 divisors (see below), whose sum is σ = 125308944. Its totient is φ = 26196800.

The previous prime is 66431143. The next prime is 66431177. The reversal of 66431150 is 5113466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5807 + ... + 12906.

It is an arithmetic number, because the mean of its divisors is an integer number (5221206).

Almost surely, 2^66431150 is an apocalyptic number.

66431150 is a deficient number, since it is larger than the sum of its proper divisors (58877794).

66431150 is a wasteful number, since it uses less digits than its factorization.

66431150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18796 (or 18791 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 66431150 is about 8150.5306575707. The cubic root of 66431150 is about 405.0020830051.

The spelling of 66431150 in words is "sixty-six million, four hundred thirty-one thousand, one hundred fifty".