685342067 has 2 divisors, whose sum is σ = 685342068. Its totient is φ = 685342066.

The previous prime is 685342057. The next prime is 685342093. The reversal of 685342067 is 760243586.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 685342067 - 2⁴ = 685342051 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (685342037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342671033 + 342671034.

It is an arithmetic number, because the mean of its divisors is an integer number (342671034).

Almost surely, 2^685342067 is an apocalyptic number.

685342067 is a deficient number, since it is larger than the sum of its proper divisors (1).

685342067 is an equidigital number, since it uses as much as digits as its factorization.

685342067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 685342067 is about 26179.0386951087. The cubic root of 685342067 is about 881.6626911214.

The spelling of 685342067 in words is "six hundred eighty-five million, three hundred forty-two thousand, sixty-seven".