345745705 has 4 divisors (see below), whose sum is σ = 414894852. Its totient is φ = 276596560.

The previous prime is 345745703. The next prime is 345745721. The reversal of 345745705 is 507547543.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 227979801 + 117765904 = 15099^2 + 10852^2 .

It is not a de Polignac number, because 345745705 - 2¹ = 345745703 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345745703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34574566 + ... + 34574575.

It is an arithmetic number, because the mean of its divisors is an integer number (103723713).

Almost surely, 2^345745705 is an apocalyptic number.

It is an amenable number.

345745705 is a deficient number, since it is larger than the sum of its proper divisors (69149147).

345745705 is an equidigital number, since it uses as much as digits as its factorization.

345745705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69149146.

The product of its (nonzero) digits is 294000, while the sum is 40.

The square root of 345745705 is about 18594.2384893816. The cubic root of 345745705 is about 701.8628646121.

The spelling of 345745705 in words is "three hundred forty-five million, seven hundred forty-five thousand, seven hundred five".