345566 has 8 divisors (see below), whose sum is σ = 558264. Its totient is φ = 159480.

The previous prime is 345551. The next prime is 345571. The reversal of 345566 is 665543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 6620 + ... + 6671.

It is an arithmetic number, because the mean of its divisors is an integer number (69783).

2³⁴⁵⁵⁶⁶ is an apocalyptic number.

345566 is a deficient number, since it is larger than the sum of its proper divisors (212698).

345566 is a wasteful number, since it uses less digits than its factorization.

345566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13306.

The product of its digits is 10800, while the sum is 29.

The square root of 345566 is about 587.8486199695. The cubic root of 345566 is about 70.1741243314.

The spelling of 345566 in words is "three hundred forty-five thousand, five hundred sixty-six".