345688 has 16 divisors (see below), whose sum is σ = 740880. Its totient is φ = 148128.

The previous prime is 345679. The next prime is 345689. The reversal of 345688 is 886543.

It is a d-powerful number, because it can be written as 3³ + 4³ + 6⁷ + 5³ + 8⁵ + 8⁵ .

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345689) by changing a digit.

345688 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3031 + ... + 3142.

It is an arithmetic number, because the mean of its divisors is an integer number (46305).

2³⁴⁵⁶⁸⁸ is an apocalyptic number.

It is an amenable number.

345688 is an abundant number, since it is smaller than the sum of its proper divisors (395192).

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

345688 is a wasteful number, since it uses less digits than its factorization.

345688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6186 (or 6182 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 345688 is about 587.9523790240. The cubic root of 345688 is about 70.1823815441.

The spelling of 345688 in words is "three hundred forty-five thousand, six hundred eighty-eight".