716198721 has 16 divisors (see below), whose sum is σ = 1097664384. Its totient is φ = 406888704.

The previous prime is 716198713. The next prime is 716198723. The reversal of 716198721 is 127891617.

It is not a de Polignac number, because 716198721 - 2³ = 716198713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (716198723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94936 + ... + 102201.

It is an arithmetic number, because the mean of its divisors is an integer number (68604024).

Almost surely, 2^716198721 is an apocalyptic number.

It is an amenable number.

716198721 is a deficient number, since it is larger than the sum of its proper divisors (381465663).

716198721 is a wasteful number, since it uses less digits than its factorization.

716198721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197320.

The product of its digits is 42336, while the sum is 42.

The square root of 716198721 is about 26761.8893391330. The cubic root of 716198721 is about 894.7008440163.

The spelling of 716198721 in words is "seven hundred sixteen million, one hundred ninety-eight thousand, seven hundred twenty-one".