684736874683 has 2 divisors, whose sum is σ = 684736874684. Its totient is φ = 684736874682.

The previous prime is 684736874623. The next prime is 684736874693. The reversal of 684736874683 is 386478637486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 684736874683 - 2¹³ = 684736866491 is a prime.

It is not a weakly prime, because it can be changed into another prime (684736874623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342368437341 + 342368437342.

It is an arithmetic number, because the mean of its divisors is an integer number (342368437342).

Almost surely, 2^684736874683 is an apocalyptic number.

684736874683 is a deficient number, since it is larger than the sum of its proper divisors (1).

684736874683 is an equidigital number, since it uses as much as digits as its factorization.

684736874683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 780337152, while the sum is 70.

The spelling of 684736874683 in words is "six hundred eighty-four billion, seven hundred thirty-six million, eight hundred seventy-four thousand, six hundred eighty-three".