704864161 has 2 divisors, whose sum is σ = 704864162. Its totient is φ = 704864160.

The previous prime is 704864159. The next prime is 704864191. The reversal of 704864161 is 161468407.

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., 418611600 + 286252561 = 20460^2 + 16919^2 .

It is a cyclic number.

It is not a de Polignac number, because 704864161 - 2¹ = 704864159 is a prime.

Together with 704864159, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 704864161.

It is not a weakly prime, because it can be changed into another prime (704864131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352432080 + 352432081.

It is an arithmetic number, because the mean of its divisors is an integer number (352432081).

Almost surely, 2^704864161 is an apocalyptic number.

It is an amenable number.

704864161 is a deficient number, since it is larger than the sum of its proper divisors (1).

704864161 is an equidigital number, since it uses as much as digits as its factorization.

704864161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 704864161 is about 26549.2779751164. The cubic root of 704864161 is about 889.9558792251.

It can be divided in two parts, 70486 and 4161, that added together give a palindrome (74647).

The spelling of 704864161 in words is "seven hundred four million, eight hundred sixty-four thousand, one hundred sixty-one".