716688018 has 48 divisors (see below), whose sum is σ = 1641868800. Its totient is φ = 225309600.

The previous prime is 716687957. The next prime is 716688019. The reversal of 716688018 is 810886617.

It is not an unprimeable number, because it can be changed into a prime (716688019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73743 + ... + 82893.

It is an arithmetic number, because the mean of its divisors is an integer number (34205600).

Almost surely, 2^716688018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 716688018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820934400).

716688018 is an abundant number, since it is smaller than the sum of its proper divisors (925180782).

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

716688018 is a wasteful number, since it uses less digits than its factorization.

716688018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9407 (or 9404 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 716688018 is about 26771.0294534969. The cubic root of 716688018 is about 894.9045466899.

The spelling of 716688018 in words is "seven hundred sixteen million, six hundred eighty-eight thousand, eighteen".