708415875421 has 2 divisors, whose sum is σ = 708415875422. Its totient is φ = 708415875420.

The previous prime is 708415875413. The next prime is 708415875437. The reversal of 708415875421 is 124578514807.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 613110924196 + 95304951225 = 783014^2 + 308715^2 .

It is an emirp because it is prime and its reverse (124578514807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 708415875421 - 2³ = 708415875413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (708415872421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354207937710 + 354207937711.

It is an arithmetic number, because the mean of its divisors is an integer number (354207937711).

Almost surely, 2^708415875421 is an apocalyptic number.

It is an amenable number.

708415875421 is a deficient number, since it is larger than the sum of its proper divisors (1).

708415875421 is an equidigital number, since it uses as much as digits as its factorization.

708415875421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2508800, while the sum is 52.

The spelling of 708415875421 in words is "seven hundred eight billion, four hundred fifteen million, eight hundred seventy-five thousand, four hundred twenty-one".