690269 has 2 divisors, whose sum is σ = 690270. Its totient is φ = 690268.

The previous prime is 690259. The next prime is 690271. The reversal of 690269 is 962096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 688900 + 1369 = 830^2 + 37^2 .

It is a cyclic number.

It is not a de Polignac number, because 690269 - 2¹² = 686173 is a prime.

It is a super-2 number, since 2×690269² = 952942584722, which contains 22 as substring.

Together with 690271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 690269.

It is not a weakly prime, because it can be changed into another prime (690259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345134 + 345135.

It is an arithmetic number, because the mean of its divisors is an integer number (345135).

2⁶⁹⁰²⁶⁹ is an apocalyptic number.

It is an amenable number.

690269 is a deficient number, since it is larger than the sum of its proper divisors (1).

690269 is an equidigital number, since it uses as much as digits as its factorization.

690269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 690269 is about 830.8242894861. The cubic root of 690269 is about 88.3770409859.

It can be divided in two parts, 690 and 269, that added together give a palindrome (959).

The spelling of 690269 in words is "six hundred ninety thousand, two hundred sixty-nine".