471640 has 32 divisors (see below), whose sum is σ = 1144080. Its totient is φ = 173952.

The previous prime is 471619. The next prime is 471641. The reversal of 471640 is 46174.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (471641) 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, 67 + ... + 973.

2⁴⁷¹⁶⁴⁰ is an apocalyptic number.

471640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 471640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (572040).

471640 is an abundant number, since it is smaller than the sum of its proper divisors (672440).

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

471640 is a wasteful number, since it uses less digits than its factorization.

471640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931 (or 927 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 471640 is about 686.7605113866. The cubic root of 471640 is about 77.8401283857.

It can be divided in two parts, 471 and 640, that added together give a palindrome (1111).

The spelling of 471640 in words is "four hundred seventy-one thousand, six hundred forty".