682820969 has 2 divisors, whose sum is σ = 682820970. Its totient is φ = 682820968.

The previous prime is 682820953. The next prime is 682820981. The reversal of 682820969 is 969028286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 433180969 + 249640000 = 20813^2 + 15800^2 .

It is a cyclic number.

It is not a de Polignac number, because 682820969 - 2⁴ = 682820953 is a prime.

It is a super-2 number, since 2×682820969² = 932488951412197922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (682820909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341410484 + 341410485.

It is an arithmetic number, because the mean of its divisors is an integer number (341410485).

Almost surely, 2^682820969 is an apocalyptic number.

It is an amenable number.

682820969 is a deficient number, since it is larger than the sum of its proper divisors (1).

682820969 is an equidigital number, since it uses as much as digits as its factorization.

682820969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 682820969 is about 26130.8432508406. The cubic root of 682820969 is about 880.5802685460.

The spelling of 682820969 in words is "six hundred eighty-two million, eight hundred twenty thousand, nine hundred sixty-nine".