232640669 has 2 divisors, whose sum is σ = 232640670. Its totient is φ = 232640668.

The previous prime is 232640663. The next prime is 232640687. The reversal of 232640669 is 966046232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214476025 + 18164644 = 14645^2 + 4262^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232640669 is a prime.

It is a super-2 number, since 2×232640669² = 108243361745535122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232640663) 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 as a sum of consecutive naturals, namely, 116320334 + 116320335.

It is an arithmetic number, because the mean of its divisors is an integer number (116320335).

Almost surely, 2^232640669 is an apocalyptic number.

It is an amenable number.

232640669 is a deficient number, since it is larger than the sum of its proper divisors (1).

232640669 is an equidigital number, since it uses as much as digits as its factorization.

232640669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 232640669 is about 15252.5627027067. The cubic root of 232640669 is about 615.0284596960.

The spelling of 232640669 in words is "two hundred thirty-two million, six hundred forty thousand, six hundred sixty-nine".