716407681 has 8 divisors (see below), whose sum is σ = 783146304. Its totient is φ = 649937520.

The previous prime is 716407669. The next prime is 716407709. The reversal of 716407681 is 186704617.

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 716407681 - 2⁷ = 716407553 is a prime.

It is a super-2 number, since 2×716407681² = 1026479930791595522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (716407621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61510 + ... + 72223.

It is an arithmetic number, because the mean of its divisors is an integer number (97893288).

Almost surely, 2^716407681 is an apocalyptic number.

It is an amenable number.

716407681 is a deficient number, since it is larger than the sum of its proper divisors (66738623).

716407681 is a wasteful number, since it uses less digits than its factorization.

716407681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134231.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 716407681 is about 26765.7931135993. The cubic root of 716407681 is about 894.7878489697.

The spelling of 716407681 in words is "seven hundred sixteen million, four hundred seven thousand, six hundred eighty-one".