716641 has 4 divisors (see below), whose sum is σ = 726532. Its totient is φ = 706752.

The previous prime is 716633. The next prime is 716659. The reversal of 716641 is 146617.

It is a happy number.

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 608400 + 108241 = 780^2 + 329^2 .

It is a cyclic number.

It is not a de Polignac number, because 716641 - 2³ = 716633 is a prime.

It is a Duffinian number.

716641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (716621) 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, 4836 + ... + 4981.

It is an arithmetic number, because the mean of its divisors is an integer number (181633).

2⁷¹⁶⁶⁴¹ is an apocalyptic number.

It is an amenable number.

716641 is a deficient number, since it is larger than the sum of its proper divisors (9891).

716641 is an equidigital number, since it uses as much as digits as its factorization.

716641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9890.

The product of its digits is 1008, while the sum is 25.

The square root of 716641 is about 846.5465137841. The cubic root of 716641 is about 89.4884976323.

The spelling of 716641 in words is "seven hundred sixteen thousand, six hundred forty-one".