682726645091 has 2 divisors, whose sum is σ = 682726645092. Its totient is φ = 682726645090.

The previous prime is 682726645087. The next prime is 682726645187. The reversal of 682726645091 is 190546627286.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 682726645091 - 2² = 682726645087 is a prime.

It is a super-2 number, since 2×682726645091² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (682726645291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341363322545 + 341363322546.

It is an arithmetic number, because the mean of its divisors is an integer number (341363322546).

Almost surely, 2^682726645091 is an apocalyptic number.

682726645091 is a deficient number, since it is larger than the sum of its proper divisors (1).

682726645091 is an equidigital number, since it uses as much as digits as its factorization.

682726645091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 682726645091 in words is "six hundred eighty-two billion, seven hundred twenty-six million, six hundred forty-five thousand, ninety-one".