345970 has 16 divisors (see below), whose sum is σ = 644760. Its totient is φ = 133504.

The previous prime is 345953. The next prime is 345979. The reversal of 345970 is 79543.

It can be written as a sum of positive squares in 4 ways, for example, as 281961 + 64009 = 531^2 + 253^2 .

It is not an unprimeable number, because it can be changed into a prime (345979) 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, 307 + ... + 886.

2³⁴⁵⁹⁷⁰ is an apocalyptic number.

345970 is a deficient number, since it is larger than the sum of its proper divisors (298790).

345970 is a wasteful number, since it uses less digits than its factorization.

345970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 345970 is about 588.1921454763. The cubic root of 345970 is about 70.2014604556.

The spelling of 345970 in words is "three hundred forty-five thousand, nine hundred seventy".