682971517 has 2 divisors, whose sum is σ = 682971518. Its totient is φ = 682971516.

The previous prime is 682971461. The next prime is 682971521. The reversal of 682971517 is 715179286.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 582691321 + 100280196 = 24139^2 + 10014^2 .

It is a cyclic number.

It is not a de Polignac number, because 682971517 - 2⁷ = 682971389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (682971217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341485758 + 341485759.

It is an arithmetic number, because the mean of its divisors is an integer number (341485759).

Almost surely, 2^682971517 is an apocalyptic number.

It is an amenable number.

682971517 is a deficient number, since it is larger than the sum of its proper divisors (1).

682971517 is an equidigital number, since it uses as much as digits as its factorization.

682971517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 46.

The square root of 682971517 is about 26133.7237492096. The cubic root of 682971517 is about 880.6449804117.

The spelling of 682971517 in words is "six hundred eighty-two million, nine hundred seventy-one thousand, five hundred seventeen".