690068273 has 2 divisors, whose sum is σ = 690068274. Its totient is φ = 690068272.

The previous prime is 690068263. The next prime is 690068303. The reversal of 690068273 is 372860096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 652955809 + 37112464 = 25553^2 + 6092^2 .

It is a cyclic number.

It is not a de Polignac number, because 690068273 - 2⁸ = 690068017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 690068273.

It is not a weakly prime, because it can be changed into another prime (690068263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345034136 + 345034137.

It is an arithmetic number, because the mean of its divisors is an integer number (345034137).

Almost surely, 2^690068273 is an apocalyptic number.

It is an amenable number.

690068273 is a deficient number, since it is larger than the sum of its proper divisors (1).

690068273 is an equidigital number, since it uses as much as digits as its factorization.

690068273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 690068273 is about 26269.1505953276. The cubic root of 690068273 is about 883.6847361189.

The spelling of 690068273 in words is "six hundred ninety million, sixty-eight thousand, two hundred seventy-three".