710621 has 2 divisors, whose sum is σ = 710622. Its totient is φ = 710620.

The previous prime is 710609. The next prime is 710623. The reversal of 710621 is 126017.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 657721 + 52900 = 811^2 + 230^2 .

It is a cyclic number.

It is not a de Polignac number, because 710621 - 2⁶ = 710557 is a prime.

It is a Sophie Germain prime.

Together with 710623, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 710621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (710623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355310 + 355311.

It is an arithmetic number, because the mean of its divisors is an integer number (355311).

2⁷¹⁰⁶²¹ is an apocalyptic number.

It is an amenable number.

710621 is a deficient number, since it is larger than the sum of its proper divisors (1).

710621 is an equidigital number, since it uses as much as digits as its factorization.

710621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 710621 is about 842.9833924817. The cubic root of 710621 is about 89.2372159318.

Adding to 710621 its reverse (126017), we get a palindrome (836638).

It can be divided in two parts, 710 and 621, that added together give a palindrome (1331).

The spelling of 710621 in words is "seven hundred ten thousand, six hundred twenty-one".