662471 has 4 divisors (see below), whose sum is σ = 666000. Its totient is φ = 658944.

The previous prime is 662449. The next prime is 662477. The reversal of 662471 is 174266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 174266 = 2 ⋅87133.

It is a cyclic number.

It is not a de Polignac number, because 662471 - 2⁶ = 662407 is a prime.

It is a super-3 number, since 3×662471³ = 872211622358139333, which contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 662471.

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 662471.

It is not an unprimeable number, because it can be changed into a prime (662477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1466 + ... + 1863.

It is an arithmetic number, because the mean of its divisors is an integer number (166500).

2⁶⁶²⁴⁷¹ is an apocalyptic number.

662471 is a deficient number, since it is larger than the sum of its proper divisors (3529).

662471 is a wasteful number, since it uses less digits than its factorization.

662471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3528.

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

The square root of 662471 is about 813.9232150516. The cubic root of 662471 is about 87.1743980475.

The spelling of 662471 in words is "six hundred sixty-two thousand, four hundred seventy-one".