345556 has 6 divisors (see below), whose sum is σ = 604730. Its totient is φ = 172776.

The previous prime is 345551. The next prime is 345571. The reversal of 345556 is 655543.

It can be written as a sum of positive squares in only one way, i.e., 211600 + 133956 = 460^2 + 366^2 .

It is a d-powerful number, because it can be written as 3² + 4⁸ + 5² + 5² + 5² + 6⁷ .

It is a plaindrome in base 6 and base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43191 + ... + 43198.

2³⁴⁵⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

345556 is a deficient number, since it is larger than the sum of its proper divisors (259174).

345556 is a wasteful number, since it uses less digits than its factorization.

345556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86393 (or 86391 counting only the distinct ones).

The product of its digits is 9000, while the sum is 28.

The square root of 345556 is about 587.8401143168. The cubic root of 345556 is about 70.1734474245.

The spelling of 345556 in words is "three hundred forty-five thousand, five hundred fifty-six".