345686773 has 2 divisors, whose sum is σ = 345686774. Its totient is φ = 345686772.

The previous prime is 345686767. The next prime is 345686791. The reversal of 345686773 is 377686543.

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., 268369924 + 77316849 = 16382^2 + 8793^2 .

It is a cyclic number.

It is not a de Polignac number, because 345686773 - 2⁹ = 345686261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345686713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172843386 + 172843387.

It is an arithmetic number, because the mean of its divisors is an integer number (172843387).

Almost surely, 2^345686773 is an apocalyptic number.

It is an amenable number.

345686773 is a deficient number, since it is larger than the sum of its proper divisors (1).

345686773 is an equidigital number, since it uses as much as digits as its factorization.

345686773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 49.

The square root of 345686773 is about 18592.6537374308. The cubic root of 345686773 is about 701.8229850783.

The spelling of 345686773 in words is "three hundred forty-five million, six hundred eighty-six thousand, seven hundred seventy-three".