68704040786 has 16 divisors (see below), whose sum is σ = 103569141240. Its totient is φ = 34181283840.

The previous prime is 68704040777. The next prime is 68704040789.

68704040786 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 46061315161 + 22642725625 = 214619^2 + 150475^2 .

It is not an unprimeable number, because it can be changed into a prime (68704040789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405566 + ... + 549446.

Almost surely, 2^68704040786 is an apocalyptic number.

68704040786 is a deficient number, since it is larger than the sum of its proper divisors (34865100454).

68704040786 is a wasteful number, since it uses less digits than its factorization.

68704040786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145069.

The product of its (nonzero) digits is 1806336, while the sum is 50.

The spelling of 68704040786 in words is "sixty-eight billion, seven hundred four million, forty thousand, seven hundred eighty-six".