716669 has 4 divisors (see below), whose sum is σ = 758844. Its totient is φ = 674496.

The previous prime is 716663. The next prime is 716671. The reversal of 716669 is 966617.

It is a happy number.

716669 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 344569 + 372100 = 587^2 + 610^2 .

It is a cyclic number.

It is not a de Polignac number, because 716669 - 2⁸ = 716413 is a prime.

It is a super-2 number, since 2×716669² = 1027228911122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (716663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21062 + ... + 21095.

It is an arithmetic number, because the mean of its divisors is an integer number (189711).

2⁷¹⁶⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

716669 is a deficient number, since it is larger than the sum of its proper divisors (42175).

716669 is a wasteful number, since it uses less digits than its factorization.

716669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42174.

The product of its digits is 13608, while the sum is 35.

The square root of 716669 is about 846.5630514026. The cubic root of 716669 is about 89.4896630905.

The spelling of 716669 in words is "seven hundred sixteen thousand, six hundred sixty-nine".