345747 has 4 divisors (see below), whose sum is σ = 461000. Its totient is φ = 230496.

The previous prime is 345739. The next prime is 345749. The reversal of 345747 is 747543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 747543 = 3 ⋅249181.

It is not a de Polignac number, because 345747 - 2³ = 345739 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345749) 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, 57622 + ... + 57627.

It is an arithmetic number, because the mean of its divisors is an integer number (115250).

345747 is a Friedman number, since it can be written as (7+7)^4*(5+4)+3, using all its digits and the basic arithmetic operations.

2³⁴⁵⁷⁴⁷ is an apocalyptic number.

345747 is a deficient number, since it is larger than the sum of its proper divisors (115253).

345747 is a wasteful number, since it uses less digits than its factorization.

345747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115252.

The product of its digits is 11760, while the sum is 30.

The square root of 345747 is about 588.0025510149. The cubic root of 345747 is about 70.1863740893.

The spelling of 345747 in words is "three hundred forty-five thousand, seven hundred forty-seven".