707669 has 2 divisors, whose sum is σ = 707670. Its totient is φ = 707668.

The previous prime is 707653. The next prime is 707671. The reversal of 707669 is 966707.

707669 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., 688900 + 18769 = 830^2 + 137^2 .

It is a cyclic number.

It is not a de Polignac number, because 707669 - 2⁴ = 707653 is a prime.

It is a super-2 number, since 2×707669² = 1001590827122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 707671, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (707689) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353834 + 353835.

It is an arithmetic number, because the mean of its divisors is an integer number (353835).

2⁷⁰⁷⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

707669 is a deficient number, since it is larger than the sum of its proper divisors (1).

707669 is an equidigital number, since it uses as much as digits as its factorization.

707669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 707669 is about 841.2306461370. The cubic root of 707669 is about 89.1134772695.

The spelling of 707669 in words is "seven hundred seven thousand, six hundred sixty-nine".