68875560 has 96 divisors (see below), whose sum is σ = 241080840. Its totient is φ = 16952832.

The previous prime is 68875559. The next prime is 68875571. The reversal of 68875560 is 6557886.

68875560 is a `hidden beast` number, since 6 + 8 + 87 + 5 + 560 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 35212356 + 33663204 = 5934^2 + 5802^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2679 + ... + 12038.

Almost surely, 2^68875560 is an apocalyptic number.

68875560 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 68875560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120540420).

68875560 is an abundant number, since it is smaller than the sum of its proper divisors (172205280).

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

68875560 is a wasteful number, since it uses less digits than its factorization.

68875560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14747 (or 14740 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 68875560 is about 8299.1300748934. The cubic root of 68875560 is about 409.9098750943.

The spelling of 68875560 in words is "sixty-eight million, eight hundred seventy-five thousand, five hundred sixty".