345742591 has 2 divisors, whose sum is σ = 345742592. Its totient is φ = 345742590.

The previous prime is 345742567. The next prime is 345742633. The reversal of 345742591 is 195247543.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345742591 - 2⁹ = 345742079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345742561) 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, 172871295 + 172871296.

It is an arithmetic number, because the mean of its divisors is an integer number (172871296).

Almost surely, 2^345742591 is an apocalyptic number.

345742591 is a deficient number, since it is larger than the sum of its proper divisors (1).

345742591 is an equidigital number, since it uses as much as digits as its factorization.

345742591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 40.

The square root of 345742591 is about 18594.1547535778. The cubic root of 345742591 is about 701.8607574685.

The spelling of 345742591 in words is "three hundred forty-five million, seven hundred forty-two thousand, five hundred ninety-one".