647274 has 16 divisors (see below), whose sum is σ = 1302912. Its totient is φ = 214368.

The previous prime is 647263. The next prime is 647293. The reversal of 647274 is 472746.

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647274.

It is an unprimeable number.

647274 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 7 ways as a sum of consecutive naturals, for example, 1167 + ... + 1629.

It is an arithmetic number, because the mean of its divisors is an integer number (81432).

2⁶⁴⁷²⁷⁴ is an apocalyptic number.

647274 is an abundant number, since it is smaller than the sum of its proper divisors (655638).

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

647274 is a wasteful number, since it uses less digits than its factorization.

647274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701.

The product of its digits is 9408, while the sum is 30.

The square root of 647274 is about 804.5334051486. The cubic root of 647274 is about 86.5026450682.

The spelling of 647274 in words is "six hundred forty-seven thousand, two hundred seventy-four".