707428321 has 2 divisors, whose sum is σ = 707428322. Its totient is φ = 707428320.

The previous prime is 707428307. The next prime is 707428343. The reversal of 707428321 is 123824707.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 705646096 + 1782225 = 26564^2 + 1335^2 .

It is an emirp because it is prime and its reverse (123824707) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 707428321 - 2²⁷ = 573210593 is a prime.

It is not a weakly prime, because it can be changed into another prime (707428621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353714160 + 353714161.

It is an arithmetic number, because the mean of its divisors is an integer number (353714161).

Almost surely, 2^707428321 is an apocalyptic number.

It is an amenable number.

707428321 is a deficient number, since it is larger than the sum of its proper divisors (1).

707428321 is an equidigital number, since it uses as much as digits as its factorization.

707428321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 707428321 is about 26597.5247156573. The cubic root of 707428321 is about 891.0337359368.

The spelling of 707428321 in words is "seven hundred seven million, four hundred twenty-eight thousand, three hundred twenty-one".