345470 has 16 divisors (see below), whose sum is σ = 628560. Its totient is φ = 136704.

The previous prime is 345463. The next prime is 345473. The reversal of 345470 is 74543.

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 345470.

It is not an unprimeable number, because it can be changed into a prime (345473) by changing a digit.

345470 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 1694 + ... + 1886.

It is an arithmetic number, because the mean of its divisors is an integer number (39285).

2³⁴⁵⁴⁷⁰ is an apocalyptic number.

345470 is a deficient number, since it is larger than the sum of its proper divisors (283090).

345470 is a wasteful number, since it uses less digits than its factorization.

345470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 345470 is about 587.7669606230. The cubic root of 345470 is about 70.1676254861.

The spelling of 345470 in words is "three hundred forty-five thousand, four hundred seventy".