68808320 has 64 divisors (see below), whose sum is σ = 188006400. Its totient is φ = 23589888.

The previous prime is 68808319. The next prime is 68808343. The reversal of 68808320 is 2380886.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3200 + ... + 12159.

It is an arithmetic number, because the mean of its divisors is an integer number (2937600).

Almost surely, 2^68808320 is an apocalyptic number.

It is an amenable number.

68808320 is an abundant number, since it is smaller than the sum of its proper divisors (119198080).

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

68808320 is a wasteful number, since it uses less digits than its factorization.

68808320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15385 (or 15373 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 68808320 is about 8295.0780587045. The cubic root of 68808320 is about 409.7764396921.

The spelling of 68808320 in words is "sixty-eight million, eight hundred eight thousand, three hundred twenty".