647342 has 16 divisors (see below), whose sum is σ = 1026432. Its totient is φ = 305760.

The previous prime is 647341. The next prime is 647357. The reversal of 647342 is 243746.

It is a happy number.

647342 is digitally balanced in base 2, 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 6⁴ + 4 + 3² + 7⁶ + 4⁶ + 2¹⁹ .

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 647342.

It is not an unprimeable number, because it can be changed into a prime (647341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3188 + ... + 3384.

It is an arithmetic number, because the mean of its divisors is an integer number (64152).

2⁶⁴⁷³⁴² is an apocalyptic number.

647342 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

647342 is a deficient number, since it is larger than the sum of its proper divisors (379090).

647342 is a wasteful number, since it uses less digits than its factorization.

647342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283.

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

The square root of 647342 is about 804.5756645587. The cubic root of 647342 is about 86.5056741686.

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

The spelling of 647342 in words is "six hundred forty-seven thousand, three hundred forty-two".