701609 has 2 divisors, whose sum is σ = 701610. Its totient is φ = 701608.

The previous prime is 701593. The next prime is 701611. The reversal of 701609 is 906107.

It is a happy number.

701609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 595984 + 105625 = 772^2 + 325^2 .

It is an emirp because it is prime and its reverse (906107) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 701609 - 2⁴ = 701593 is a prime.

Together with 701611, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (701629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350804 + 350805.

It is an arithmetic number, because the mean of its divisors is an integer number (350805).

2⁷⁰¹⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

701609 is a deficient number, since it is larger than the sum of its proper divisors (1).

701609 is an equidigital number, since it uses as much as digits as its factorization.

701609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 701609 is about 837.6210360300. The cubic root of 701609 is about 88.8583784755.

The spelling of 701609 in words is "seven hundred one thousand, six hundred nine".