704234415721 has 2 divisors, whose sum is σ = 704234415722. Its totient is φ = 704234415720.

The previous prime is 704234415667. The next prime is 704234415757. The reversal of 704234415721 is 127514432407.

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., 407497106025 + 296737309696 = 638355^2 + 544736^2 .

It is a cyclic number.

It is not a de Polignac number, because 704234415721 - 2¹⁹ = 704233891433 is a prime.

It is a super-2 number, since 2×704234415721² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (704234410721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352117207860 + 352117207861.

It is an arithmetic number, because the mean of its divisors is an integer number (352117207861).

Almost surely, 2^704234415721 is an apocalyptic number.

It is an amenable number.

704234415721 is a deficient number, since it is larger than the sum of its proper divisors (1).

704234415721 is an equidigital number, since it uses as much as digits as its factorization.

704234415721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 188160, while the sum is 40.

The spelling of 704234415721 in words is "seven hundred four billion, two hundred thirty-four million, four hundred fifteen thousand, seven hundred twenty-one".