345261773 has 2 divisors, whose sum is σ = 345261774. Its totient is φ = 345261772.

The previous prime is 345261743. The next prime is 345261793. The reversal of 345261773 is 377162543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205005124 + 140256649 = 14318^2 + 11843^2 .

It is a cyclic number.

It is not a de Polignac number, because 345261773 - 2¹² = 345257677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345261743) 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, 172630886 + 172630887.

It is an arithmetic number, because the mean of its divisors is an integer number (172630887).

Almost surely, 2^345261773 is an apocalyptic number.

It is an amenable number.

345261773 is a deficient number, since it is larger than the sum of its proper divisors (1).

345261773 is an equidigital number, since it uses as much as digits as its factorization.

345261773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 38.

The square root of 345261773 is about 18581.2209771048. The cubic root of 345261773 is about 701.5352514881.

The spelling of 345261773 in words is "three hundred forty-five million, two hundred sixty-one thousand, seven hundred seventy-three".