707689 has 2 divisors, whose sum is σ = 707690. Its totient is φ = 707688.

The previous prime is 707683. The next prime is 707711. The reversal of 707689 is 986707.

707689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 514089 + 193600 = 717^2 + 440^2 .

It is an emirp because it is prime and its reverse (986707) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 707689 - 2⁷ = 707561 is a prime.

It is not a weakly prime, because it can be changed into another prime (707683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353844 + 353845.

It is an arithmetic number, because the mean of its divisors is an integer number (353845).

2⁷⁰⁷⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

707689 is a deficient number, since it is larger than the sum of its proper divisors (1).

707689 is an equidigital number, since it uses as much as digits as its factorization.

707689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 707689 is about 841.2425333993. The cubic root of 707689 is about 89.1143167640.

The spelling of 707689 in words is "seven hundred seven thousand, six hundred eighty-nine".