68163820 has 12 divisors (see below), whose sum is σ = 143144064. Its totient is φ = 27265520.

The previous prime is 68163803. The next prime is 68163841. The reversal of 68163820 is 2836186.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1704076 + ... + 1704115.

It is an arithmetic number, because the mean of its divisors is an integer number (11928672).

Almost surely, 2^68163820 is an apocalyptic number.

It is an amenable number.

68163820 is an abundant number, since it is smaller than the sum of its proper divisors (74980244).

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

68163820 is a wasteful number, since it uses less digits than its factorization.

68163820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408200 (or 3408198 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 68163820 is about 8256.1383224847. The cubic root of 68163820 is about 408.4930202401.

The spelling of 68163820 in words is "sixty-eight million, one hundred sixty-three thousand, eight hundred twenty".