345266 has 4 divisors (see below), whose sum is σ = 517902. Its totient is φ = 172632.

The previous prime is 345263. The next prime is 345271. The reversal of 345266 is 662543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 662543 = 7 ⋅94649.

It can be written as a sum of positive squares in only one way, i.e., 330625 + 14641 = 575^2 + 121^2 .

It is a super-2 number, since 2×345266² = 238417221512, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (345263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86315 + ... + 86318.

2³⁴⁵²⁶⁶ is an apocalyptic number.

345266 is a deficient number, since it is larger than the sum of its proper divisors (172636).

345266 is a wasteful number, since it uses less digits than its factorization.

345266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172635.

The product of its digits is 4320, while the sum is 26.

The square root of 345266 is about 587.5933968315. The cubic root of 345266 is about 70.1538114415.

The spelling of 345266 in words is "three hundred forty-five thousand, two hundred sixty-six".