66233145 has 64 divisors (see below), whose sum is σ = 125199360. Its totient is φ = 29548800.

The previous prime is 66233117. The next prime is 66233159. The reversal of 66233145 is 54133266.

It is not a de Polignac number, because 66233145 - 2⁵ = 66233113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 115710 + ... + 116280.

It is an arithmetic number, because the mean of its divisors is an integer number (1956240).

Almost surely, 2^66233145 is an apocalyptic number.

It is an amenable number.

66233145 is a deficient number, since it is larger than the sum of its proper divisors (58966215).

66233145 is a wasteful number, since it uses less digits than its factorization.

66233145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646.

The product of its digits is 12960, while the sum is 30.

The square root of 66233145 is about 8138.3748377671. The cubic root of 66233145 is about 404.5992988512.

The spelling of 66233145 in words is "sixty-six million, two hundred thirty-three thousand, one hundred forty-five".