716456509 has 8 divisors (see below), whose sum is σ = 765842112. Its totient is φ = 668590560.

The previous prime is 716456467. The next prime is 716456519. The reversal of 716456509 is 905654617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 716456509 - 2⁹ = 716455997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (716456519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378939 + ... + 380824.

It is an arithmetic number, because the mean of its divisors is an integer number (95730264).

Almost surely, 2^716456509 is an apocalyptic number.

It is an amenable number.

716456509 is a deficient number, since it is larger than the sum of its proper divisors (49385603).

716456509 is a wasteful number, since it uses less digits than its factorization.

716456509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759827.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 716456509 is about 26766.7052324338. The cubic root of 716456509 is about 894.8081771105.

The spelling of 716456509 in words is "seven hundred sixteen million, four hundred fifty-six thousand, five hundred nine".