716421717 has 24 divisors (see below), whose sum is σ = 1129784448. Its totient is φ = 433857600.

The previous prime is 716421697. The next prime is 716421743. The reversal of 716421717 is 717124617.

716421717 is a `hidden beast` number, since 7 + 1 + 642 + 1 + 7 + 1 + 7 = 666.

It is not a de Polignac number, because 716421717 - 2⁶ = 716421653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (716420717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195492 + ... + 199122.

It is an arithmetic number, because the mean of its divisors is an integer number (47074352).

Almost surely, 2^716421717 is an apocalyptic number.

It is an amenable number.

716421717 is a deficient number, since it is larger than the sum of its proper divisors (413362731).

716421717 is a wasteful number, since it uses less digits than its factorization.

716421717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5641 (or 5638 counting only the distinct ones).

The product of its digits is 16464, while the sum is 36.

The square root of 716421717 is about 26766.0553126530. The cubic root of 716421717 is about 894.7936925513.

The spelling of 716421717 in words is "seven hundred sixteen million, four hundred twenty-one thousand, seven hundred seventeen".