68840046 has 36 divisors (see below), whose sum is σ = 163950696. Its totient is φ = 20859960.

The previous prime is 68840039. The next prime is 68840063. The reversal of 68840046 is 64004886.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13626 + ... + 17981.

It is an arithmetic number, because the mean of its divisors is an integer number (4554186).

Almost surely, 2^68840046 is an apocalyptic number.

68840046 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

68840046 is an abundant number, since it is smaller than the sum of its proper divisors (95110650).

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

68840046 is a wasteful number, since it uses less digits than its factorization.

68840046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31637 (or 31623 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 68840046 is about 8296.9901771667. The cubic root of 68840046 is about 409.8394096438.

The spelling of 68840046 in words is "sixty-eight million, eight hundred forty thousand, forty-six".