682991137 has 2 divisors, whose sum is σ = 682991138. Its totient is φ = 682991136.

The previous prime is 682991123. The next prime is 682991149. The reversal of 682991137 is 731199286.

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., 351787536 + 331203601 = 18756^2 + 18199^2 .

It is a cyclic number.

It is not a de Polignac number, because 682991137 - 2⁷ = 682991009 is a prime.

It is not a weakly prime, because it can be changed into another prime (682991237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341495568 + 341495569.

It is an arithmetic number, because the mean of its divisors is an integer number (341495569).

Almost surely, 2^682991137 is an apocalyptic number.

It is an amenable number.

682991137 is a deficient number, since it is larger than the sum of its proper divisors (1).

682991137 is an equidigital number, since it uses as much as digits as its factorization.

682991137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 46.

The square root of 682991137 is about 26134.0991235589. The cubic root of 682991137 is about 880.6534132129.

The spelling of 682991137 in words is "six hundred eighty-two million, nine hundred ninety-one thousand, one hundred thirty-seven".