470640 has 80 divisors (see below), whose sum is σ = 1526688. Its totient is φ = 119808.

The previous prime is 470627. The next prime is 470647. The reversal of 470640 is 46074.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (470647) by changing a digit.

470640 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 15 ways as a sum of consecutive naturals, for example, 8854 + ... + 8906.

2⁴⁷⁰⁶⁴⁰ is an apocalyptic number.

470640 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 470640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (763344).

470640 is an abundant number, since it is smaller than the sum of its proper divisors (1056048).

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

470640 is a wasteful number, since it uses less digits than its factorization.

470640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 470640 is about 686.0320692213. The cubic root of 470640 is about 77.7850756569.

The spelling of 470640 in words is "four hundred seventy thousand, six hundred forty".