347870 has 16 divisors (see below), whose sum is σ = 641520. Its totient is φ = 135744.

The previous prime is 347849. The next prime is 347873. The reversal of 347870 is 78743.

It is an alternating number because its digits alternate between odd and even.

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 347870.

It is not an unprimeable number, because it can be changed into a prime (347873) by changing a digit.

347870 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26 + ... + 834.

It is an arithmetic number, because the mean of its divisors is an integer number (40095).

2³⁴⁷⁸⁷⁰ is an apocalyptic number.

347870 is a deficient number, since it is larger than the sum of its proper divisors (293650).

347870 is a wasteful number, since it uses less digits than its factorization.

347870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 347870 is about 589.8050525385. The cubic root of 347870 is about 70.3297368441.

The spelling of 347870 in words is "three hundred forty-seven thousand, eight hundred seventy".