908669 has 2 divisors, whose sum is σ = 908670. Its totient is φ = 908668.

The previous prime is 908653. The next prime is 908671. The reversal of 908669 is 966809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 532900 + 375769 = 730^2 + 613^2 .

It is a cyclic number.

It is not a de Polignac number, because 908669 - 2⁴ = 908653 is a prime.

It is a super-2 number, since 2×908669² = 1651358703122, which contains 22 as substring.

Together with 908671, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (902669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454334 + 454335.

It is an arithmetic number, because the mean of its divisors is an integer number (454335).

2⁹⁰⁸⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

908669 is a deficient number, since it is larger than the sum of its proper divisors (1).

908669 is an equidigital number, since it uses as much as digits as its factorization.

908669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 908669 is about 953.2413125752. The cubic root of 908669 is about 96.8579420538.

The spelling of 908669 in words is "nine hundred eight thousand, six hundred sixty-nine".