68761560 has 128 divisors (see below), whose sum is σ = 238233600. Its totient is φ = 15552000.

The previous prime is 68761531. The next prime is 68761571. The reversal of 68761560 is 6516786.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 91185 + ... + 91935.

It is an arithmetic number, because the mean of its divisors is an integer number (1861200).

Almost surely, 2^68761560 is an apocalyptic number.

68761560 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 68761560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119116800).

68761560 is an abundant number, since it is smaller than the sum of its proper divisors (169472040).

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

68761560 is a wasteful number, since it uses less digits than its factorization.

68761560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881 (or 877 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 68761560 is about 8292.2590408163. The cubic root of 68761560 is about 409.6835948714.

The spelling of 68761560 in words is "sixty-eight million, seven hundred sixty-one thousand, five hundred sixty".