690767321243 has 2 divisors, whose sum is σ = 690767321244. Its totient is φ = 690767321242.

The previous prime is 690767321213. The next prime is 690767321249. The reversal of 690767321243 is 342123767096.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 690767321243 - 2¹² = 690767317147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 690767321191 and 690767321200.

It is not a weakly prime, because it can be changed into another prime (690767321249) 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, 345383660621 + 345383660622.

It is an arithmetic number, because the mean of its divisors is an integer number (345383660622).

Almost surely, 2^690767321243 is an apocalyptic number.

690767321243 is a deficient number, since it is larger than the sum of its proper divisors (1).

690767321243 is an equidigital number, since it uses as much as digits as its factorization.

690767321243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 50.

The spelling of 690767321243 in words is "six hundred ninety billion, seven hundred sixty-seven million, three hundred twenty-one thousand, two hundred forty-three".