68681694 has 48 divisors (see below), whose sum is σ = 149065488. Its totient is φ = 21078144.

The previous prime is 68681689. The next prime is 68681719. The reversal of 68681694 is 49618686.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79714 + ... + 80570.

It is an arithmetic number, because the mean of its divisors is an integer number (3105531).

Almost surely, 2^68681694 is an apocalyptic number.

68681694 is an abundant number, since it is smaller than the sum of its proper divisors (80383794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68681694 is a wasteful number, since it uses less digits than its factorization.

68681694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937 (or 918 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 68681694 is about 8287.4419454980. The cubic root of 68681694 is about 409.5249186862.

The spelling of 68681694 in words is "sixty-eight million, six hundred eighty-one thousand, six hundred ninety-four".