345247 has 16 divisors (see below), whose sum is σ = 428032. Its totient is φ = 272160.

The previous prime is 345229. The next prime is 345259. The reversal of 345247 is 742543.

345247 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 345247 - 2¹¹ = 343199 is a prime.

It is a d-powerful number, because it can be written as 3³ + 4⁶ + 2⁹ + 5⁷ + 4⁹ + 7³ .

It is a Duffinian number.

345247 is a lucky number.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8008 + ... + 8050.

It is an arithmetic number, because the mean of its divisors is an integer number (26752).

2³⁴⁵²⁴⁷ is an apocalyptic number.

345247 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

345247 is a deficient number, since it is larger than the sum of its proper divisors (82785).

345247 is a wasteful number, since it uses less digits than its factorization.

345247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118.

The product of its digits is 3360, while the sum is 25.

The square root of 345247 is about 587.5772289665. The cubic root of 345247 is about 70.1525245623.

The spelling of 345247 in words is "three hundred forty-five thousand, two hundred forty-seven".