345647513 has 2 divisors, whose sum is σ = 345647514. Its totient is φ = 345647512.

The previous prime is 345647501. The next prime is 345647527. The reversal of 345647513 is 315746543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305096089 + 40551424 = 17467^2 + 6368^2 .

It is a cyclic number.

It is not a de Polignac number, because 345647513 - 2²² = 341453209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (345647593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172823756 + 172823757.

It is an arithmetic number, because the mean of its divisors is an integer number (172823757).

Almost surely, 2^345647513 is an apocalyptic number.

It is an amenable number.

345647513 is a deficient number, since it is larger than the sum of its proper divisors (1).

345647513 is an equidigital number, since it uses as much as digits as its factorization.

345647513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 38.

The square root of 345647513 is about 18591.5979141116. The cubic root of 345647513 is about 701.7964151546.

The spelling of 345647513 in words is "three hundred forty-five million, six hundred forty-seven thousand, five hundred thirteen".