68681746 has 32 divisors (see below), whose sum is σ = 120953088. Its totient is φ = 28641600.

The previous prime is 68681741. The next prime is 68681759. The reversal of 68681746 is 64718686.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 68681696 and 68681705.

It is not an unprimeable number, because it can be changed into a prime (68681741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111736 + ... + 112348.

It is an arithmetic number, because the mean of its divisors is an integer number (3779784).

Almost surely, 2^68681746 is an apocalyptic number.

68681746 is a deficient number, since it is larger than the sum of its proper divisors (52271342).

68681746 is a wasteful number, since it uses less digits than its factorization.

68681746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826.

The product of its digits is 387072, while the sum is 46.

The square root of 68681746 is about 8287.4450827743. The cubic root of 68681746 is about 409.5250220388.

The spelling of 68681746 in words is "sixty-eight million, six hundred eighty-one thousand, seven hundred forty-six".