342687 has 4 divisors (see below), whose sum is σ = 456920. Its totient is φ = 228456.

The previous prime is 342679. The next prime is 342691. The reversal of 342687 is 786243.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 342687 - 2³ = 342679 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 342687.

It is not an unprimeable number, because it can be changed into a prime (342607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57112 + ... + 57117.

It is an arithmetic number, because the mean of its divisors is an integer number (114230).

2³⁴²⁶⁸⁷ is an apocalyptic number.

342687 is a deficient number, since it is larger than the sum of its proper divisors (114233).

342687 is a wasteful number, since it uses less digits than its factorization.

342687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114232.

The product of its digits is 8064, while the sum is 30.

The square root of 342687 is about 585.3947386166. The cubic root of 342687 is about 69.9787010030.

Subtracting 342687 from its reverse (786243), we obtain a square (443556 = 666²).

The spelling of 342687 in words is "three hundred forty-two thousand, six hundred eighty-seven".