690122335493 has 2 divisors, whose sum is σ = 690122335494. Its totient is φ = 690122335492.

The previous prime is 690122335453. The next prime is 690122335519. The reversal of 690122335493 is 394533221096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 686168692609 + 3953642884 = 828353^2 + 62878^2 .

It is a cyclic number.

It is not a de Polignac number, because 690122335493 - 2⁸ = 690122335237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (690122335423) 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, 345061167746 + 345061167747.

It is an arithmetic number, because the mean of its divisors is an integer number (345061167747).

Almost surely, 2^690122335493 is an apocalyptic number.

It is an amenable number.

690122335493 is a deficient number, since it is larger than the sum of its proper divisors (1).

690122335493 is an equidigital number, since it uses as much as digits as its factorization.

690122335493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1049760, while the sum is 47.

The spelling of 690122335493 in words is "six hundred ninety billion, one hundred twenty-two million, three hundred thirty-five thousand, four hundred ninety-three".