345097805 has 16 divisors (see below), whose sum is σ = 448565040. Its totient is φ = 253360128.

The previous prime is 345097799. The next prime is 345097813. The reversal of 345097805 is 508790543.

It can be written as a sum of positive squares in 8 ways, for example, as 34316164 + 310781641 = 5858^2 + 17629^2 .

It is a cyclic number.

It is not a de Polignac number, because 345097805 - 2⁴ = 345097789 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 4100 + ... + 26589.

It is an arithmetic number, because the mean of its divisors is an integer number (28035315).

Almost surely, 2^345097805 is an apocalyptic number.

It is an amenable number.

345097805 is a deficient number, since it is larger than the sum of its proper divisors (103467235).

345097805 is a wasteful number, since it uses less digits than its factorization.

345097805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30880.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 345097805 is about 18576.8082565332. The cubic root of 345097805 is about 701.4241787162.

The spelling of 345097805 in words is "three hundred forty-five million, ninety-seven thousand, eight hundred five".