345644027 has 2 divisors, whose sum is σ = 345644028. Its totient is φ = 345644026.

The previous prime is 345644021. The next prime is 345644041. The reversal of 345644027 is 720446543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345644027 - 2¹⁶ = 345578491 is a prime.

It is not a weakly prime, because it can be changed into another prime (345644021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172822013 + 172822014.

It is an arithmetic number, because the mean of its divisors is an integer number (172822014).

Almost surely, 2^345644027 is an apocalyptic number.

345644027 is a deficient number, since it is larger than the sum of its proper divisors (1).

345644027 is an equidigital number, since it uses as much as digits as its factorization.

345644027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 35.

The square root of 345644027 is about 18591.5041618477. The cubic root of 345644027 is about 701.7940558430.

The spelling of 345644027 in words is "three hundred forty-five million, six hundred forty-four thousand, twenty-seven".