233665164 has 18 divisors (see below), whose sum is σ = 590653700. Its totient is φ = 77888376.

The previous prime is 233665163. The next prime is 233665183. The reversal of 233665164 is 461566332.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 6490699 = 233665164 / (2 + 3 + 3 + 6 + 6 + 5 + 1 + 6 + 4).

It is not an unprimeable number, because it can be changed into a prime (233665163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3245314 + ... + 3245385.

Almost surely, 2^233665164 is an apocalyptic number.

It is an amenable number.

233665164 is an abundant number, since it is smaller than the sum of its proper divisors (356988536).

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

233665164 is a wasteful number, since it uses less digits than its factorization.

233665164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6490709 (or 6490704 counting only the distinct ones).

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

The square root of 233665164 is about 15286.1101657681. The cubic root of 233665164 is about 615.9299514152.

The spelling of 233665164 in words is "two hundred thirty-three million, six hundred sixty-five thousand, one hundred sixty-four".