345718 has 4 divisors (see below), whose sum is σ = 518580. Its totient is φ = 172858.

The previous prime is 345707. The next prime is 345727. The reversal of 345718 is 817543.

345718 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 817543 = 317 ⋅2579.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86428 + ... + 86431.

It is an arithmetic number, because the mean of its divisors is an integer number (129645).

2³⁴⁵⁷¹⁸ is an apocalyptic number.

345718 is a deficient number, since it is larger than the sum of its proper divisors (172862).

345718 is a wasteful number, since it uses less digits than its factorization.

345718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172861.

The product of its digits is 3360, while the sum is 28.

The square root of 345718 is about 587.9778907408. The cubic root of 345718 is about 70.1844117086.

It can be divided in two parts, 3457 and 18, that multiplied together give a palindrome (62226).

The spelling of 345718 in words is "three hundred forty-five thousand, seven hundred eighteen".