689054269 has 2 divisors, whose sum is σ = 689054270. Its totient is φ = 689054268.

The previous prime is 689054237. The next prime is 689054273. The reversal of 689054269 is 962450986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 674077369 + 14976900 = 25963^2 + 3870^2 .

It is a cyclic number.

It is not a de Polignac number, because 689054269 - 2⁵ = 689054237 is a prime.

It is a super-2 number, since 2×689054269² = 949591571254248722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (689054279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344527134 + 344527135.

It is an arithmetic number, because the mean of its divisors is an integer number (344527135).

Almost surely, 2^689054269 is an apocalyptic number.

It is an amenable number.

689054269 is a deficient number, since it is larger than the sum of its proper divisors (1).

689054269 is an equidigital number, since it uses as much as digits as its factorization.

689054269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 689054269 is about 26249.8432185794. The cubic root of 689054269 is about 883.2516876083.

The spelling of 689054269 in words is "six hundred eighty-nine million, fifty-four thousand, two hundred sixty-nine".