345770 has 16 divisors (see below), whose sum is σ = 632448. Its totient is φ = 136080.

The previous prime is 345769. The next prime is 345773. The reversal of 345770 is 77543.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 345770.

It is not an unprimeable number, because it can be changed into a prime (345773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467 + ... + 953.

It is an arithmetic number, because the mean of its divisors is an integer number (39528).

2³⁴⁵⁷⁷⁰ is an apocalyptic number.

345770 is a deficient number, since it is larger than the sum of its proper divisors (286678).

345770 is a wasteful number, since it uses less digits than its factorization.

345770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565.

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 345770 is about 588.0221084279. The cubic root of 345770 is about 70.1879303822.

Subtracting from 345770 its sum of digits (26), we obtain a square (345744 = 588²).

The spelling of 345770 in words is "three hundred forty-five thousand, seven hundred seventy".