689707232443 has 2 divisors, whose sum is σ = 689707232444. Its totient is φ = 689707232442.

The previous prime is 689707232437. The next prime is 689707232503. The reversal of 689707232443 is 344232707986.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-689707232443 is a prime.

It is not a weakly prime, because it can be changed into another prime (689707232143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344853616221 + 344853616222.

It is an arithmetic number, because the mean of its divisors is an integer number (344853616222).

Almost surely, 2^689707232443 is an apocalyptic number.

689707232443 is a deficient number, since it is larger than the sum of its proper divisors (1).

689707232443 is an equidigital number, since it uses as much as digits as its factorization.

689707232443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12192768, while the sum is 55.

The spelling of 689707232443 in words is "six hundred eighty-nine billion, seven hundred seven million, two hundred thirty-two thousand, four hundred forty-three".