472661 has 4 divisors (see below), whose sum is σ = 540192. Its totient is φ = 405132.

The previous prime is 472643. The next prime is 472669. The reversal of 472661 is 166274.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166274 = 2 ⋅83137.

It is not a de Polignac number, because 472661 - 2⁶ = 472597 is a prime.

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 472661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (472669) 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, 33755 + ... + 33768.

It is an arithmetic number, because the mean of its divisors is an integer number (135048).

2⁴⁷²⁶⁶¹ is an apocalyptic number.

It is an amenable number.

472661 is a deficient number, since it is larger than the sum of its proper divisors (67531).

472661 is an equidigital number, since it uses as much as digits as its factorization.

472661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67530.

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

The square root of 472661 is about 687.5034545368. The cubic root of 472661 is about 77.8962569946.

The spelling of 472661 in words is "four hundred seventy-two thousand, six hundred sixty-one".