68507838 has 24 divisors (see below), whose sum is σ = 169638768. Its totient is φ = 19573632.

The previous prime is 68507833. The next prime is 68507849. The reversal of 68507838 is 83870586.

68507838 is a `hidden beast` number, since 68 + 507 + 83 + 8 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68507793 and 68507802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68507833) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 271731 + ... + 271982.

It is an arithmetic number, because the mean of its divisors is an integer number (7068282).

Almost surely, 2^68507838 is an apocalyptic number.

68507838 is an abundant number, since it is smaller than the sum of its proper divisors (101130930).

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

68507838 is a wasteful number, since it uses less digits than its factorization.

68507838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543728 (or 543725 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 68507838 is about 8276.9461759758. The cubic root of 68507838 is about 409.1790792044.

The spelling of 68507838 in words is "sixty-eight million, five hundred seven thousand, eight hundred thirty-eight".