347445 has 24 divisors (see below), whose sum is σ = 688896. Its totient is φ = 158688.

The previous prime is 347443. The next prime is 347489. The reversal of 347445 is 544743.

It is not a de Polignac number, because 347445 - 2¹ = 347443 is a prime.

It is a d-powerful number, because it can be written as 3⁸ + 4² + 4⁴ + 7³ + 4⁹ + 5⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237 + ... + 866.

It is an arithmetic number, because the mean of its divisors is an integer number (28704).

2³⁴⁷⁴⁴⁵ is an apocalyptic number.

347445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

347445 is a deficient number, since it is larger than the sum of its proper divisors (341451).

347445 is a wasteful number, since it uses less digits than its factorization.

347445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121 (or 1118 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 347445 is about 589.4446538904. Note that the first 3 decimals coincide. The cubic root of 347445 is about 70.3010840725.

Subtracting from 347445 its product of digits (6720), we obtain a triangular number (340725 = T₈₂₅).

The spelling of 347445 in words is "three hundred forty-seven thousand, four hundred forty-five".