345884689 has 2 divisors, whose sum is σ = 345884690. Its totient is φ = 345884688.

The previous prime is 345884641. The next prime is 345884761. The reversal of 345884689 is 986488543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179345664 + 166539025 = 13392^2 + 12905^2 .

It is a cyclic number.

It is not a de Polignac number, because 345884689 - 2¹³ = 345876497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345884629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172942344 + 172942345.

It is an arithmetic number, because the mean of its divisors is an integer number (172942345).

Almost surely, 2^345884689 is an apocalyptic number.

It is an amenable number.

345884689 is a deficient number, since it is larger than the sum of its proper divisors (1).

345884689 is an equidigital number, since it uses as much as digits as its factorization.

345884689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6635520, while the sum is 55.

The square root of 345884689 is about 18597.9754005644. The cubic root of 345884689 is about 701.9568977305.

The spelling of 345884689 in words is "three hundred forty-five million, eight hundred eighty-four thousand, six hundred eighty-nine".