232661853 has 6 divisors (see below), whose sum is σ = 336067134. Its totient is φ = 155107896.

The previous prime is 232661831. The next prime is 232661903. The reversal of 232661853 is 358166232.

It is a happy number.

232661853 is a `hidden beast` number, since 2 + 32 + 6 + 618 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 171164889 + 61496964 = 13083^2 + 7842^2 .

It is a de Polignac number, because none of the positive numbers 2^k-232661853 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232660853) 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 5 ways as a sum of consecutive naturals, for example, 12925650 + ... + 12925667.

It is an arithmetic number, because the mean of its divisors is an integer number (56011189).

Almost surely, 2^232661853 is an apocalyptic number.

It is an amenable number.

232661853 is a deficient number, since it is larger than the sum of its proper divisors (103405281).

232661853 is a wasteful number, since it uses less digits than its factorization.

232661853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25851323 (or 25851320 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 232661853 is about 15253.2571275777. The cubic root of 232661853 is about 615.0471270648.

The spelling of 232661853 in words is "two hundred thirty-two million, six hundred sixty-one thousand, eight hundred fifty-three".