347805 has 24 divisors (see below), whose sum is σ = 617760. Its totient is φ = 180960.

The previous prime is 347801. The next prime is 347813. The reversal of 347805 is 508743.

It is not a de Polignac number, because 347805 - 2² = 347801 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 347805.

It is not an unprimeable number, because it can be changed into a prime (347801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2590 + ... + 2720.

It is an arithmetic number, because the mean of its divisors is an integer number (25740).

2³⁴⁷⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

347805 is a deficient number, since it is larger than the sum of its proper divisors (269955).

347805 is a wasteful number, since it uses less digits than its factorization.

347805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 347805 is about 589.7499470114. The cubic root of 347805 is about 70.3253561677.

The spelling of 347805 in words is "three hundred forty-seven thousand, eight hundred five".