689471351 has 2 divisors, whose sum is σ = 689471352. Its totient is φ = 689471350.

The previous prime is 689471311. The next prime is 689471353. The reversal of 689471351 is 153174986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 689471351 - 2¹⁸ = 689209207 is a prime.

Together with 689471353, 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 (689471353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344735675 + 344735676.

It is an arithmetic number, because the mean of its divisors is an integer number (344735676).

Almost surely, 2^689471351 is an apocalyptic number.

689471351 is a deficient number, since it is larger than the sum of its proper divisors (1).

689471351 is an equidigital number, since it uses as much as digits as its factorization.

689471351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 689471351 is about 26257.7864832510. The cubic root of 689471351 is about 883.4298613235.

The spelling of 689471351 in words is "six hundred eighty-nine million, four hundred seventy-one thousand, three hundred fifty-one".