68808285 has 80 divisors (see below), whose sum is σ = 151890816. Its totient is φ = 29020032.

The previous prime is 68808281. The next prime is 68808293. The reversal of 68808285 is 58280886.

It is not a de Polignac number, because 68808285 - 2² = 68808281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68808285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68808281) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 35922 + ... + 37788.

Almost surely, 2^68808285 is an apocalyptic number.

68808285 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68808285 is an abundant number, since it is smaller than the sum of its proper divisors (83082531).

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

68808285 is a wasteful number, since it uses less digits than its factorization.

68808285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904 (or 1895 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The square root of 68808285 is about 8295.0759490194. The cubic root of 68808285 is about 409.7763702132.

The spelling of 68808285 in words is "sixty-eight million, eight hundred eight thousand, two hundred eighty-five".