68643750 has 96 divisors (see below), whose sum is σ = 196487424. Its totient is φ = 15660000.

The previous prime is 68643737. The next prime is 68643779. The reversal of 68643750 is 5734686.

It is a junction number, because it is equal to n+sod(n) for n = 68643699 and 68643708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130989 + ... + 131511.

It is an arithmetic number, because the mean of its divisors is an integer number (2046744).

Almost surely, 2^68643750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68643750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98243712).

68643750 is an abundant number, since it is smaller than the sum of its proper divisors (127843674).

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

68643750 is an equidigital number, since it uses as much as digits as its factorization.

68643750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 68643750 is about 8285.1523824248. The cubic root of 68643750 is about 409.4494891937.

The spelling of 68643750 in words is "sixty-eight million, six hundred forty-three thousand, seven hundred fifty".