684500797 has 2 divisors, whose sum is σ = 684500798. Its totient is φ = 684500796.

The previous prime is 684500753. The next prime is 684500893. The reversal of 684500797 is 797005486.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 636351076 + 48149721 = 25226^2 + 6939^2 .

It is a cyclic number.

It is not a de Polignac number, because 684500797 - 2²³ = 676112189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (684500497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342250398 + 342250399.

It is an arithmetic number, because the mean of its divisors is an integer number (342250399).

Almost surely, 2^684500797 is an apocalyptic number.

It is an amenable number.

684500797 is a deficient number, since it is larger than the sum of its proper divisors (1).

684500797 is an equidigital number, since it uses as much as digits as its factorization.

684500797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 684500797 is about 26162.9661353601. The cubic root of 684500797 is about 881.3017910175.

The spelling of 684500797 in words is "six hundred eighty-four million, five hundred thousand, seven hundred ninety-seven".