689242007 has 2 divisors, whose sum is σ = 689242008. Its totient is φ = 689242006.

The previous prime is 689241979. The next prime is 689242009. The reversal of 689242007 is 700242986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 689242007 - 2¹⁰ = 689240983 is a prime.

Together with 689242009, 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 (689242009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344621003 + 344621004.

It is an arithmetic number, because the mean of its divisors is an integer number (344621004).

Almost surely, 2^689242007 is an apocalyptic number.

689242007 is a deficient number, since it is larger than the sum of its proper divisors (1).

689242007 is an equidigital number, since it uses as much as digits as its factorization.

689242007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 689242007 is about 26253.4189582995. The cubic root of 689242007 is about 883.3318965049.

The spelling of 689242007 in words is "six hundred eighty-nine million, two hundred forty-two thousand, seven".