710427721 has 2 divisors, whose sum is σ = 710427722. Its totient is φ = 710427720.

The previous prime is 710427719. The next prime is 710427769. The reversal of 710427721 is 127724017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 659462400 + 50965321 = 25680^2 + 7139^2 .

It is a cyclic number.

It is not a de Polignac number, because 710427721 - 2¹ = 710427719 is a prime.

Together with 710427719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (710427821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355213860 + 355213861.

It is an arithmetic number, because the mean of its divisors is an integer number (355213861).

Almost surely, 2^710427721 is an apocalyptic number.

It is an amenable number.

710427721 is a deficient number, since it is larger than the sum of its proper divisors (1).

710427721 is an equidigital number, since it uses as much as digits as its factorization.

710427721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 710427721 is about 26653.8500220887. The cubic root of 710427721 is about 892.2912477222.

The spelling of 710427721 in words is "seven hundred ten million, four hundred twenty-seven thousand, seven hundred twenty-one".