66331150 has 12 divisors (see below), whose sum is σ = 123376032. Its totient is φ = 26532440.

The previous prime is 66331099. The next prime is 66331151. The reversal of 66331150 is 5113366.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66331151) 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, 663262 + ... + 663361.

It is an arithmetic number, because the mean of its divisors is an integer number (10281336).

Almost surely, 2^66331150 is an apocalyptic number.

66331150 is a deficient number, since it is larger than the sum of its proper divisors (57044882).

66331150 is a wasteful number, since it uses less digits than its factorization.

66331150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326635 (or 1326630 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 66331150 is about 8144.3937773170. The cubic root of 66331150 is about 404.7987619867.

It can be divided in two parts, 663 and 31150, that added together give a palindrome (31813).

The spelling of 66331150 in words is "sixty-six million, three hundred thirty-one thousand, one hundred fifty".