145322666 has 8 divisors (see below), whose sum is σ = 218789184. Its totient is φ = 72392940.

The previous prime is 145322651. The next prime is 145322689. The reversal of 145322666 is 666223541.

It is a happy number.

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

It is a super-2 number, since 2×145322666² = 42237354506695112, which contains 22 as substring.

It is an unprimeable number.

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, 133520 + ... + 134603.

It is an arithmetic number, because the mean of its divisors is an integer number (27348648).

Almost surely, 2^145322666 is an apocalyptic number.

145322666 is a deficient number, since it is larger than the sum of its proper divisors (73466518).

145322666 is a wasteful number, since it uses less digits than its factorization.

145322666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268396.

The product of its digits is 51840, while the sum is 35.

The square root of 145322666 is about 12054.9851099037. The cubic root of 145322666 is about 525.7481891660.

The spelling of 145322666 in words is "one hundred forty-five million, three hundred twenty-two thousand, six hundred sixty-six".