345656543 has 2 divisors, whose sum is σ = 345656544. Its totient is φ = 345656542.

The previous prime is 345656537. The next prime is 345656573.

345656543 is nontrivially palindromic in base 10.

345656543 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 345656543 - 2⁸ = 345656287 is a prime.

It is a Sophie Germain prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 345656543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345656503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172828271 + 172828272.

It is an arithmetic number, because the mean of its divisors is an integer number (172828272).

Almost surely, 2^345656543 is an apocalyptic number.

345656543 is a deficient number, since it is larger than the sum of its proper divisors (1).

345656543 is an equidigital number, since it uses as much as digits as its factorization.

345656543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648000, while the sum is 41.

The square root of 345656543 is about 18591.8407641632. The cubic root of 345656543 is about 701.8025265505.

The spelling of 345656543 in words is "three hundred forty-five million, six hundred fifty-six thousand, five hundred forty-three".