345009865 has 8 divisors (see below), whose sum is σ = 414920520. Its totient is φ = 275402112.

The previous prime is 345009823. The next prime is 345009869. The reversal of 345009865 is 568900543.

It can be written as a sum of positive squares in 4 ways, for example, as 79352464 + 265657401 = 8908^2 + 16299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 345009865 - 2¹³ = 345001673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345009869) 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 in 7 ways as a sum of consecutive naturals, for example, 73210 + ... + 77779.

It is an arithmetic number, because the mean of its divisors is an integer number (51865065).

Almost surely, 2^345009865 is an apocalyptic number.

It is an amenable number.

345009865 is a deficient number, since it is larger than the sum of its proper divisors (69910655).

345009865 is a wasteful number, since it uses less digits than its factorization.

345009865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151451.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 345009865 is about 18574.4411759816. The cubic root of 345009865 is about 701.3645932097.

The spelling of 345009865 in words is "three hundred forty-five million, nine thousand, eight hundred sixty-five".