345499 has 12 divisors (see below), whose sum is σ = 439128. Its totient is φ = 268800.

The previous prime is 345487. The next prime is 345511. The reversal of 345499 is 994543.

It is an interprime number because it is at equal distance from previous prime (345487) and next prime (345511).

It is not a de Polignac number, because 345499 - 2⁹ = 344987 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (345479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219 + ... + 859.

It is an arithmetic number, because the mean of its divisors is an integer number (36594).

2³⁴⁵⁴⁹⁹ is an apocalyptic number.

345499 is a deficient number, since it is larger than the sum of its proper divisors (93629).

345499 is a wasteful number, since it uses less digits than its factorization.

345499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666 (or 659 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 345499 is about 587.7916297465. The cubic root of 345499 is about 70.1695888059.

It can be divided in two parts, 3454 and 99, that added together give a palindrome (3553).

The spelling of 345499 in words is "three hundred forty-five thousand, four hundred ninety-nine".