345073 has 4 divisors (see below), whose sum is σ = 346788. Its totient is φ = 343360.

The previous prime is 345067. The next prime is 345089. The reversal of 345073 is 370543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 370543 = 31 ⋅11953.

It can be written as a sum of positive squares in 2 ways, for example, as 106929 + 238144 = 327^2 + 488^2 .

It is a cyclic number.

It is not a de Polignac number, because 345073 - 2⁵ = 345041 is a prime.

It is a Smith number, since the sum of its digits (22) 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 (345473) 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, 508 + ... + 973.

It is an arithmetic number, because the mean of its divisors is an integer number (86697).

2³⁴⁵⁰⁷³ is an apocalyptic number.

It is an amenable number.

345073 is a deficient number, since it is larger than the sum of its proper divisors (1715).

345073 is a wasteful number, since it uses less digits than its factorization.

345073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 345073 is about 587.4291446634. The cubic root of 345073 is about 70.1407372617.

The spelling of 345073 in words is "three hundred forty-five thousand, seventy-three".