145501666 has 8 divisors (see below), whose sum is σ = 218312640. Its totient is φ = 72730788.

The previous prime is 145501651. The next prime is 145501667. The reversal of 145501666 is 666105541.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (145501667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1875 + ... + 17161.

It is an arithmetic number, because the mean of its divisors is an integer number (27289080).

Almost surely, 2^145501666 is an apocalyptic number.

145501666 is a deficient number, since it is larger than the sum of its proper divisors (72810974).

145501666 is a wasteful number, since it uses less digits than its factorization.

145501666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20048.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 145501666 is about 12062.4071395389. The cubic root of 145501666 is about 525.9639626021.

The spelling of 145501666 in words is "one hundred forty-five million, five hundred one thousand, six hundred sixty-six".