230680661 has 2 divisors, whose sum is σ = 230680662. Its totient is φ = 230680660.

The previous prime is 230680627. The next prime is 230680663. The reversal of 230680661 is 166086032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163686436 + 66994225 = 12794^2 + 8185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230680661 is a prime.

Together with 230680663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230680663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115340330 + 115340331.

It is an arithmetic number, because the mean of its divisors is an integer number (115340331).

Almost surely, 2^230680661 is an apocalyptic number.

It is an amenable number.

230680661 is a deficient number, since it is larger than the sum of its proper divisors (1).

230680661 is an equidigital number, since it uses as much as digits as its factorization.

230680661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 230680661 is about 15188.1750384962. The cubic root of 230680661 is about 613.2963721885.

The spelling of 230680661 in words is "two hundred thirty million, six hundred eighty thousand, six hundred sixty-one".