687222323 has 2 divisors, whose sum is σ = 687222324. Its totient is φ = 687222322.

The previous prime is 687222307. The next prime is 687222379. The reversal of 687222323 is 323222786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 687222323 - 2⁴ = 687222307 is a prime.

It is not a weakly prime, because it can be changed into another prime (687222223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343611161 + 343611162.

It is an arithmetic number, because the mean of its divisors is an integer number (343611162).

Almost surely, 2^687222323 is an apocalyptic number.

687222323 is a deficient number, since it is larger than the sum of its proper divisors (1).

687222323 is an equidigital number, since it uses as much as digits as its factorization.

687222323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 35.

The square root of 687222323 is about 26214.9255768541. The cubic root of 687222323 is about 882.4682440081.

The spelling of 687222323 in words is "six hundred eighty-seven million, two hundred twenty-two thousand, three hundred twenty-three".