232681661 has 2 divisors, whose sum is σ = 232681662. Its totient is φ = 232681660.

The previous prime is 232681637. The next prime is 232681681. The reversal of 232681661 is 166186232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169780900 + 62900761 = 13030^2 + 7931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232681661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232681681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116340830 + 116340831.

It is an arithmetic number, because the mean of its divisors is an integer number (116340831).

Almost surely, 2^232681661 is an apocalyptic number.

It is an amenable number.

232681661 is a deficient number, since it is larger than the sum of its proper divisors (1).

232681661 is an equidigital number, since it uses as much as digits as its factorization.

232681661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 232681661 is about 15253.9064177017. The cubic root of 232681661 is about 615.0645808754.

The spelling of 232681661 in words is "two hundred thirty-two million, six hundred eighty-one thousand, six hundred sixty-one".