345646 has 12 divisors (see below), whose sum is σ = 603288. Its totient is φ = 148092.

The previous prime is 345643. The next prime is 345647. The reversal of 345646 is 646543.

345646 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 3³ + 4² + 6 + 5³ + 4⁸ + 6⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1666 + ... + 1861.

It is an arithmetic number, because the mean of its divisors is an integer number (50274).

2³⁴⁵⁶⁴⁶ is an apocalyptic number.

345646 is a deficient number, since it is larger than the sum of its proper divisors (257642).

345646 is a wasteful number, since it uses less digits than its factorization.

345646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3543 (or 3536 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 345646 is about 587.9166607607. The cubic root of 345646 is about 70.1795391164.

The spelling of 345646 in words is "three hundred forty-five thousand, six hundred forty-six".