68716730 has 32 divisors (see below), whose sum is σ = 130671360. Its totient is φ = 25945920.

The previous prime is 68716727. The next prime is 68716751. The reversal of 68716730 is 3761786.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74975 + ... + 75885.

It is an arithmetic number, because the mean of its divisors is an integer number (4083480).

Almost surely, 2^68716730 is an apocalyptic number.

68716730 is a deficient number, since it is larger than the sum of its proper divisors (61954630).

68716730 is a wasteful number, since it uses less digits than its factorization.

68716730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 68716730 is about 8289.5554766224. Note that the first 3 decimals coincide. The cubic root of 68716730 is about 409.5945426532.

The spelling of 68716730 in words is "sixty-eight million, seven hundred sixteen thousand, seven hundred thirty".