345715 has 4 divisors (see below), whose sum is σ = 414864. Its totient is φ = 276568.

The previous prime is 345707. The next prime is 345727. The reversal of 345715 is 517543.

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

It is a cyclic number.

It is not a de Polignac number, because 345715 - 2³ = 345707 is a prime.

It is a super-2 number, since 2×345715² = 239037722450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345715.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34567 + ... + 34576.

It is an arithmetic number, because the mean of its divisors is an integer number (103716).

2³⁴⁵⁷¹⁵ is an apocalyptic number.

345715 is a deficient number, since it is larger than the sum of its proper divisors (69149).

345715 is an equidigital number, since it uses as much as digits as its factorization.

345715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69148.

The product of its digits is 2100, while the sum is 25.

The square root of 345715 is about 587.9753396189. The cubic root of 345715 is about 70.1842086974.

The spelling of 345715 in words is "three hundred forty-five thousand, seven hundred fifteen".