684867470723 has 2 divisors, whose sum is σ = 684867470724. Its totient is φ = 684867470722.

The previous prime is 684867470699. The next prime is 684867470737. The reversal of 684867470723 is 327074768486.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 684867470723 - 2⁶ = 684867470659 is a prime.

It is not a weakly prime, because it can be changed into another prime (684867473723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342433735361 + 342433735362.

It is an arithmetic number, because the mean of its divisors is an integer number (342433735362).

Almost surely, 2^684867470723 is an apocalyptic number.

684867470723 is a deficient number, since it is larger than the sum of its proper divisors (1).

684867470723 is an equidigital number, since it uses as much as digits as its factorization.

684867470723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75866112, while the sum is 62.

The spelling of 684867470723 in words is "six hundred eighty-four billion, eight hundred sixty-seven million, four hundred seventy thousand, seven hundred twenty-three".