684325273 has 2 divisors, whose sum is σ = 684325274. Its totient is φ = 684325272.

The previous prime is 684325237. The next prime is 684325277. The reversal of 684325273 is 372523486.

Together with previous prime (684325237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381147529 + 303177744 = 19523^2 + 17412^2 .

It is a cyclic number.

It is not a de Polignac number, because 684325273 - 2¹⁷ = 684194201 is a prime.

It is not a weakly prime, because it can be changed into another prime (684325277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342162636 + 342162637.

It is an arithmetic number, because the mean of its divisors is an integer number (342162637).

Almost surely, 2^684325273 is an apocalyptic number.

It is an amenable number.

684325273 is a deficient number, since it is larger than the sum of its proper divisors (1).

684325273 is an equidigital number, since it uses as much as digits as its factorization.

684325273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 40.

The square root of 684325273 is about 26159.6114841180. The cubic root of 684325273 is about 881.2264549282.

The spelling of 684325273 in words is "six hundred eighty-four million, three hundred twenty-five thousand, two hundred seventy-three".