682681511 has 2 divisors, whose sum is σ = 682681512. Its totient is φ = 682681510.

The previous prime is 682681451. The next prime is 682681513. The reversal of 682681511 is 115186286.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-682681511 is a prime.

It is a super-2 number, since 2×682681511² = 932108090922486242, which contains 22 as substring.

Together with 682681513, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (682681513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341340755 + 341340756.

It is an arithmetic number, because the mean of its divisors is an integer number (341340756).

Almost surely, 2^682681511 is an apocalyptic number.

682681511 is a deficient number, since it is larger than the sum of its proper divisors (1).

682681511 is an equidigital number, since it uses as much as digits as its factorization.

682681511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 38.

The square root of 682681511 is about 26128.1746587855. The cubic root of 682681511 is about 880.5203151419.

The spelling of 682681511 in words is "six hundred eighty-two million, six hundred eighty-one thousand, five hundred eleven".