69990259 has 2 divisors, whose sum is σ = 69990260. Its totient is φ = 69990258.

The previous prime is 69990257. The next prime is 69990289. The reversal of 69990259 is 95209996.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69990259 - 2¹ = 69990257 is a prime.

Together with 69990257, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (69990257) 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, 34995129 + 34995130.

It is an arithmetic number, because the mean of its divisors is an integer number (34995130).

Almost surely, 2^69990259 is an apocalyptic number.

69990259 is a deficient number, since it is larger than the sum of its proper divisors (1).

69990259 is an equidigital number, since it uses as much as digits as its factorization.

69990259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 393660, while the sum is 49.

The square root of 69990259 is about 8366.0181089931. The cubic root of 69990259 is about 412.1094122178.

The spelling of 69990259 in words is "sixty-nine million, nine hundred ninety thousand, two hundred fifty-nine".