685274963 has 2 divisors, whose sum is σ = 685274964. Its totient is φ = 685274962.

The previous prime is 685274939. The next prime is 685274969. The reversal of 685274963 is 369472586.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 685274963 - 2¹⁸ = 685012819 is a prime.

It is not a weakly prime, because it can be changed into another prime (685274969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342637481 + 342637482.

It is an arithmetic number, because the mean of its divisors is an integer number (342637482).

Almost surely, 2^685274963 is an apocalyptic number.

685274963 is a deficient number, since it is larger than the sum of its proper divisors (1).

685274963 is an equidigital number, since it uses as much as digits as its factorization.

685274963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The square root of 685274963 is about 26177.7570276752. The cubic root of 685274963 is about 881.6339147253.

The spelling of 685274963 in words is "six hundred eighty-five million, two hundred seventy-four thousand, nine hundred sixty-three".