345618 has 48 divisors (see below), whose sum is σ = 926016. Its totient is φ = 90720.

The previous prime is 345607. The next prime is 345637. The reversal of 345618 is 816543.

345618 is a `hidden beast` number, since 3 + 45 + 618 = 666.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 345591 and 345600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1533 + ... + 1743.

It is an arithmetic number, because the mean of its divisors is an integer number (19292).

2³⁴⁵⁶¹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463008).

345618 is an abundant number, since it is smaller than the sum of its proper divisors (580398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345618 is a wasteful number, since it uses less digits than its factorization.

345618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 236 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 345618 is about 587.8928473795. The cubic root of 345618 is about 70.1776440367.

The spelling of 345618 in words is "three hundred forty-five thousand, six hundred eighteen".