68681626 has 32 divisors (see below), whose sum is σ = 113552208. Its totient is φ = 30965760.

The previous prime is 68681603. The next prime is 68681629. The reversal of 68681626 is 62618686.

It can be written as a sum of positive squares in 8 ways, for example, as 9006001 + 59675625 = 3001^2 + 7725^2 .

It is not an unprimeable number, because it can be changed into a prime (68681629) 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 15 ways as a sum of consecutive naturals, for example, 284866 + ... + 285106.

Almost surely, 2^68681626 is an apocalyptic number.

68681626 is a deficient number, since it is larger than the sum of its proper divisors (44870582).

68681626 is a wasteful number, since it uses less digits than its factorization.

68681626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466.

The product of its digits is 165888, while the sum is 43.

The square root of 68681626 is about 8287.4378429042. The cubic root of 68681626 is about 409.5247835328.

The spelling of 68681626 in words is "sixty-eight million, six hundred eighty-one thousand, six hundred twenty-six".