146331666 has 48 divisors (see below), whose sum is σ = 349405056. Its totient is φ = 43975008.

The previous prime is 146331649. The next prime is 146331667. The reversal of 146331666 is 666133641.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 146331666.

It is not an unprimeable number, because it can be changed into a prime (146331667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2791 + ... + 17333.

It is an arithmetic number, because the mean of its divisors is an integer number (7279272).

Almost surely, 2^146331666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 146331666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174702528).

146331666 is an abundant number, since it is smaller than the sum of its proper divisors (203073390).

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

146331666 is a wasteful number, since it uses less digits than its factorization.

146331666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14607 (or 14604 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 146331666 is about 12096.7626247687. The cubic root of 146331666 is about 526.9621702421.

The spelling of 146331666 in words is "one hundred forty-six million, three hundred thirty-one thousand, six hundred sixty-six".