345678743 has 2 divisors, whose sum is σ = 345678744. Its totient is φ = 345678742.

The previous prime is 345678733. The next prime is 345678779. The reversal of 345678743 is 347876543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345678743 - 2⁴ = 345678727 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345678733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172839371 + 172839372.

It is an arithmetic number, because the mean of its divisors is an integer number (172839372).

Almost surely, 2^345678743 is an apocalyptic number.

345678743 is a deficient number, since it is larger than the sum of its proper divisors (1).

345678743 is an equidigital number, since it uses as much as digits as its factorization.

345678743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 47.

The square root of 345678743 is about 18592.4377906718. The cubic root of 345678743 is about 701.8175507924.

The spelling of 345678743 in words is "three hundred forty-five million, six hundred seventy-eight thousand, seven hundred forty-three".