66381150 has 48 divisors (see below), whose sum is σ = 179595648. Its totient is φ = 16092000.

The previous prime is 66381149. The next prime is 66381181. The reversal of 66381150 is 5118366.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18466 + ... + 21765.

It is an arithmetic number, because the mean of its divisors is an integer number (3741576).

Almost surely, 2^66381150 is an apocalyptic number.

66381150 is an abundant number, since it is smaller than the sum of its proper divisors (113214498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66381150 is a wasteful number, since it uses less digits than its factorization.

66381150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40257 (or 40252 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 66381150 is about 8147.4627952510. The cubic root of 66381150 is about 404.9004480203.

The spelling of 66381150 in words is "sixty-six million, three hundred eighty-one thousand, one hundred fifty".