716657 has 4 divisors (see below), whose sum is σ = 747840. Its totient is φ = 685476.

The previous prime is 716633. The next prime is 716659. The reversal of 716657 is 756617.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 756617 = 31 ⋅24407.

It is a cyclic number.

It is not a de Polignac number, because 716657 - 2¹² = 712561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (716659) 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 3 ways as a sum of consecutive naturals, for example, 15557 + ... + 15602.

It is an arithmetic number, because the mean of its divisors is an integer number (186960).

2⁷¹⁶⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

716657 is a deficient number, since it is larger than the sum of its proper divisors (31183).

716657 is a wasteful number, since it uses less digits than its factorization.

716657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31182.

The product of its digits is 8820, while the sum is 32.

The square root of 716657 is about 846.5559638913. Note that the first 3 decimals coincide. The cubic root of 716657 is about 89.4891636121.

The spelling of 716657 in words is "seven hundred sixteen thousand, six hundred fifty-seven".