342647 has 2 divisors, whose sum is σ = 342648. Its totient is φ = 342646.

The previous prime is 342607. The next prime is 342653. The reversal of 342647 is 746243.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (746243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 342647 - 2¹⁰ = 341623 is a prime.

It is a Chen prime.

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 342647.

It is not a weakly prime, because it can be changed into another prime (342607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171323 + 171324.

It is an arithmetic number, because the mean of its divisors is an integer number (171324).

2³⁴²⁶⁴⁷ is an apocalyptic number.

342647 is a deficient number, since it is larger than the sum of its proper divisors (1).

342647 is an equidigital number, since it uses as much as digits as its factorization.

342647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 26.

The square root of 342647 is about 585.3605726388. The cubic root of 342647 is about 69.9759781519.

It can be divided in two parts, 342 and 647, that added together give a palindrome (989).

The spelling of 342647 in words is "three hundred forty-two thousand, six hundred forty-seven".