689414807 has 2 divisors, whose sum is σ = 689414808. Its totient is φ = 689414806.

The previous prime is 689414779. The next prime is 689414809. The reversal of 689414807 is 708414986.

689414807 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 is a cyclic number.

It is not a de Polignac number, because 689414807 - 2¹⁰ = 689413783 is a prime.

It is a super-2 number, since 2×689414807² = 950585552221694498, which contains 22 as substring.

Together with 689414809, 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 (689414809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344707403 + 344707404.

It is an arithmetic number, because the mean of its divisors is an integer number (344707404).

Almost surely, 2^689414807 is an apocalyptic number.

689414807 is a deficient number, since it is larger than the sum of its proper divisors (1).

689414807 is an equidigital number, since it uses as much as digits as its factorization.

689414807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 689414807 is about 26256.7097519853. The cubic root of 689414807 is about 883.4057104415.

The spelling of 689414807 in words is "six hundred eighty-nine million, four hundred fourteen thousand, eight hundred seven".