68812560 has 120 divisors (see below), whose sum is σ = 238627584. Its totient is φ = 17752320.

The previous prime is 68812543. The next prime is 68812577. The reversal of 68812560 is 6521886.

It is a happy number.

68812560 is a `hidden beast` number, since 6 + 88 + 12 + 560 = 666.

It is an interprime number because it is at equal distance from previous prime (68812543) and next prime (68812577).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20779 + ... + 23861.

Almost surely, 2^68812560 is an apocalyptic number.

68812560 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 68812560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119313792).

68812560 is an abundant number, since it is smaller than the sum of its proper divisors (169815024).

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

68812560 is a wasteful number, since it uses less digits than its factorization.

68812560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133 (or 3124 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 68812560 is about 8295.3336280104. Note that the first 3 decimals coincide. The cubic root of 68812560 is about 409.7848563895.

The spelling of 68812560 in words is "sixty-eight million, eight hundred twelve thousand, five hundred sixty".