67708190997 has 24 divisors (see below), whose sum is σ = 98531741880. Its totient is φ = 44802495360.

The previous prime is 67708190989. The next prime is 67708191007. The reversal of 67708190997 is 79909180776.

It can be written as a sum of positive squares in 4 ways, for example, as 20444996196 + 47263194801 = 142986^2 + 217401^2 .

It is not a de Polignac number, because 67708190997 - 2³ = 67708190989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67708190197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 701079 + ... + 791787.

It is an arithmetic number, because the mean of its divisors is an integer number (4105489245).

Almost surely, 2^67708190997 is an apocalyptic number.

It is an amenable number.

67708190997 is a deficient number, since it is larger than the sum of its proper divisors (30823550883).

67708190997 is a wasteful number, since it uses less digits than its factorization.

67708190997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91333 (or 91330 counting only the distinct ones).

The product of its (nonzero) digits is 12002256, while the sum is 63.

The spelling of 67708190997 in words is "sixty-seven billion, seven hundred eight million, one hundred ninety thousand, nine hundred ninety-seven".