716381 has 4 divisors (see below), whose sum is σ = 747552. Its totient is φ = 685212.

The previous prime is 716351. The next prime is 716383. The reversal of 716381 is 183617.

716381 = T₂₃₈ + T₂₃₉ + ... + T₂₆₀.

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.

It is a cyclic number.

It is not a de Polignac number, because 716381 - 2¹⁰ = 715357 is a prime.

It is a super-2 number, since 2×716381² = 1026403474322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 716381.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 716381.

It is not an unprimeable number, because it can be changed into a prime (716383) 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, 15551 + ... + 15596.

It is an arithmetic number, because the mean of its divisors is an integer number (186888).

2⁷¹⁶³⁸¹ is an apocalyptic number.

It is an amenable number.

716381 is a deficient number, since it is larger than the sum of its proper divisors (31171).

716381 is a wasteful number, since it uses less digits than its factorization.

716381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31170.

The product of its digits is 1008, while the sum is 26.

The square root of 716381 is about 846.3929347531. The cubic root of 716381 is about 89.4776740708.

Adding to 716381 its reverse (183617), we get a palindrome (899998).

The spelling of 716381 in words is "seven hundred sixteen thousand, three hundred eighty-one".