290669 has 2 divisors, whose sum is σ = 290670. Its totient is φ = 290668.

The previous prime is 290663. The next prime is 290671. The reversal of 290669 is 966092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289444 + 1225 = 538^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 290669 - 2¹⁶ = 225133 is a prime.

It is a super-2 number, since 2×290669² = 168976935122, which contains 22 as substring.

Together with 290671, 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 (290663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145334 + 145335.

It is an arithmetic number, because the mean of its divisors is an integer number (145335).

2²⁹⁰⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

290669 is a deficient number, since it is larger than the sum of its proper divisors (1).

290669 is an equidigital number, since it uses as much as digits as its factorization.

290669 is an evil number, because the sum of its binary digits is even.

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

The square root of 290669 is about 539.1372737995. The cubic root of 290669 is about 66.2419190333.

It can be divided in two parts, 290 and 669, that added together give a palindrome (959).

The spelling of 290669 in words is "two hundred ninety thousand, six hundred sixty-nine".