68921160 has 128 divisors (see below), whose sum is σ = 257817600. Its totient is φ = 14319360.

The previous prime is 68921159. The next prime is 68921207. The reversal of 68921160 is 6112986.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5511 + ... + 12969.

It is an arithmetic number, because the mean of its divisors is an integer number (2014200).

Almost surely, 2^68921160 is an apocalyptic number.

68921160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68921160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128908800).

68921160 is an abundant number, since it is smaller than the sum of its proper divisors (188896440).

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

68921160 is a wasteful number, since it uses less digits than its factorization.

68921160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7491 (or 7487 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 68921160 is about 8301.8768962205. The cubic root of 68921160 is about 410.0003172712. Note that the first 3 decimals are identical.

The spelling of 68921160 in words is "sixty-eight million, nine hundred twenty-one thousand, one hundred sixty".