68363920 has 40 divisors (see below), whose sum is σ = 161563320. Its totient is φ = 26895360.

The previous prime is 68363917. The next prime is 68363947. The reversal of 68363920 is 2936386.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2039184 + 66324736 = 1428^2 + 8144^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 68363920.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2125 + ... + 11884.

It is an arithmetic number, because the mean of its divisors is an integer number (4039083).

Almost surely, 2^68363920 is an apocalyptic number.

It is an amenable number.

68363920 is an abundant number, since it is smaller than the sum of its proper divisors (93199400).

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

68363920 is a wasteful number, since it uses less digits than its factorization.

68363920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14083 (or 14077 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 68363920 is about 8268.2476982732. The cubic root of 68363920 is about 408.8923503610.

The spelling of 68363920 in words is "sixty-eight million, three hundred sixty-three thousand, nine hundred twenty".