682166489 has 2 divisors, whose sum is σ = 682166490. Its totient is φ = 682166488.

The previous prime is 682166479. The next prime is 682166503. The reversal of 682166489 is 984661286.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 595360000 + 86806489 = 24400^2 + 9317^2 .

It is a cyclic number.

It is not a de Polignac number, because 682166489 - 2⁴ = 682166473 is a prime.

It is a super-2 number, since 2×682166489² = 930702237429174242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (682166479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341083244 + 341083245.

It is an arithmetic number, because the mean of its divisors is an integer number (341083245).

Almost surely, 2^682166489 is an apocalyptic number.

It is an amenable number.

682166489 is a deficient number, since it is larger than the sum of its proper divisors (1).

682166489 is an equidigital number, since it uses as much as digits as its factorization.

682166489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 50.

The square root of 682166489 is about 26118.3171165372. The cubic root of 682166489 is about 880.2988348895.

The spelling of 682166489 in words is "six hundred eighty-two million, one hundred sixty-six thousand, four hundred eighty-nine".