704721640414489 has 2 divisors, whose sum is σ = 704721640414490. Its totient is φ = 704721640414488.

The previous prime is 704721640414447. The next prime is 704721640414607. The reversal of 704721640414489 is 984414046127407.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 456078949560025 + 248642690854464 = 21356005^2 + 15768408^2 .

It is a cyclic number.

It is not a de Polignac number, because 704721640414489 - 2¹⁵ = 704721640381721 is a prime.

It is a super-2 number, since 2×704721640414489² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (704721640414789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352360820207244 + 352360820207245.

It is an arithmetic number, because the mean of its divisors is an integer number (352360820207245).

Almost surely, 2^{704721640414489} is an apocalyptic number.

It is an amenable number.

704721640414489 is a deficient number, since it is larger than the sum of its proper divisors (1).

704721640414489 is an equidigital number, since it uses as much as digits as its factorization.

704721640414489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43352064, while the sum is 61.

The spelling of 704721640414489 in words is "seven hundred four trillion, seven hundred twenty-one billion, six hundred forty million, four hundred fourteen thousand, four hundred eighty-nine".