647162 has 4 divisors (see below), whose sum is σ = 970746. Its totient is φ = 323580.

The previous prime is 647161. The next prime is 647189. The reversal of 647162 is 261746.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 261746 = 2 ⋅130873.

It can be written as a sum of positive squares in only one way, i.e., 398161 + 249001 = 631^2 + 499^2 .

It is a plaindrome in base 14.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (647161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161789 + ... + 161792.

2⁶⁴⁷¹⁶² is an apocalyptic number.

647162 is a deficient number, since it is larger than the sum of its proper divisors (323584).

647162 is a wasteful number, since it uses less digits than its factorization.

647162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323583.

The product of its digits is 2016, while the sum is 26.

The square root of 647162 is about 804.4637965751. The cubic root of 647162 is about 86.4976554991.

The spelling of 647162 in words is "six hundred forty-seven thousand, one hundred sixty-two".