685331267 has 2 divisors, whose sum is σ = 685331268. Its totient is φ = 685331266.

The previous prime is 685331233. The next prime is 685331293. The reversal of 685331267 is 762133586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 685331267 - 2⁸ = 685331011 is a prime.

It is not a weakly prime, because it can be changed into another prime (685330267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342665633 + 342665634.

It is an arithmetic number, because the mean of its divisors is an integer number (342665634).

Almost surely, 2^685331267 is an apocalyptic number.

685331267 is a deficient number, since it is larger than the sum of its proper divisors (1).

685331267 is an equidigital number, since it uses as much as digits as its factorization.

685331267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

The square root of 685331267 is about 26178.8324223981. The cubic root of 685331267 is about 881.6580598540.

It can be divided in two parts, 68 and 5331267, that added together give a palindrome (5331335).

The spelling of 685331267 in words is "six hundred eighty-five million, three hundred thirty-one thousand, two hundred sixty-seven".