68857860 has 96 divisors (see below), whose sum is σ = 206260992. Its totient is φ = 17121280.

The previous prime is 68857847. The next prime is 68857889. The reversal of 68857860 is 6875886.

It is a happy number.

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, 55972 + ... + 57188.

It is an arithmetic number, because the mean of its divisors is an integer number (2148552).

Almost surely, 2^68857860 is an apocalyptic number.

68857860 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 68857860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103130496).

68857860 is an abundant number, since it is smaller than the sum of its proper divisors (137403132).

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

68857860 is a wasteful number, since it uses less digits than its factorization.

68857860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293 (or 1291 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The square root of 68857860 is about 8298.0636295464. The cubic root of 68857860 is about 409.8747584947.

The spelling of 68857860 in words is "sixty-eight million, eight hundred fifty-seven thousand, eight hundred sixty".