233666145 has 24 divisors (see below), whose sum is σ = 405412800. Its totient is φ = 124501536.

The previous prime is 233666143. The next prime is 233666197. The reversal of 233666145 is 541666332.

It is not a de Polignac number, because 233666145 - 2¹ = 233666143 is a prime.

It is a super-2 number, since 2×233666145² = 109199734638322050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (233666143) by changing a digit.

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, 63876 + ... + 67434.

It is an arithmetic number, because the mean of its divisors is an integer number (16892200).

Almost surely, 2^233666145 is an apocalyptic number.

It is an amenable number.

233666145 is a deficient number, since it is larger than the sum of its proper divisors (171746655).

233666145 is a wasteful number, since it uses less digits than its factorization.

233666145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5029 (or 5026 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 233666145 is about 15286.1422536885. The cubic root of 233666145 is about 615.9308133700.

The spelling of 233666145 in words is "two hundred thirty-three million, six hundred sixty-six thousand, one hundred forty-five".