708641 has 2 divisors, whose sum is σ = 708642. Its totient is φ = 708640.

The previous prime is 708601. The next prime is 708647. The reversal of 708641 is 146807.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 616225 + 92416 = 785^2 + 304^2 .

It is an emirp because it is prime and its reverse (146807) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-708641 is a prime.

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 708641.

It is not a weakly prime, because it can be changed into another prime (708647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354320 + 354321.

It is an arithmetic number, because the mean of its divisors is an integer number (354321).

2⁷⁰⁸⁶⁴¹ is an apocalyptic number.

It is an amenable number.

708641 is a deficient number, since it is larger than the sum of its proper divisors (1).

708641 is an equidigital number, since it uses as much as digits as its factorization.

708641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 708641 is about 841.8081729230. The cubic root of 708641 is about 89.1542584222.

The spelling of 708641 in words is "seven hundred eight thousand, six hundred forty-one".