68810560 has 224 divisors, whose sum is σ = 215066880. Its totient is φ = 20348928.

The previous prime is 68810557. The next prime is 68810627. The reversal of 68810560 is 6501886.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent 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, 494971 + ... + 495109.

It is an arithmetic number, because the mean of its divisors is an integer number (960120).

Almost surely, 2^68810560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68810560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107533440).

68810560 is an abundant number, since it is smaller than the sum of its proper divisors (146256320).

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

68810560 is a wasteful number, since it uses less digits than its factorization.

68810560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 68810560 is about 8295.2130774321. The cubic root of 68810560 is about 409.7808862923.

The spelling of 68810560 in words is "sixty-eight million, eight hundred ten thousand, five hundred sixty".