69432689 has 2 divisors, whose sum is σ = 69432690. Its totient is φ = 69432688.

The previous prime is 69432667. The next prime is 69432691. The reversal of 69432689 is 98623496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54878464 + 14554225 = 7408^2 + 3815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69432689 is a prime.

It is a Sophie Germain prime.

Together with 69432691, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (69432089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34716344 + 34716345.

It is an arithmetic number, because the mean of its divisors is an integer number (34716345).

Almost surely, 2^69432689 is an apocalyptic number.

It is an amenable number.

69432689 is a deficient number, since it is larger than the sum of its proper divisors (1).

69432689 is an equidigital number, since it uses as much as digits as its factorization.

69432689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 47.

The square root of 69432689 is about 8332.6279768150. The cubic root of 69432689 is about 411.0121512777.

The spelling of 69432689 in words is "sixty-nine million, four hundred thirty-two thousand, six hundred eighty-nine".