487640 has 32 divisors (see below), whose sum is σ = 1118880. Its totient is φ = 191232.

The previous prime is 487637. The next prime is 487649. The reversal of 487640 is 46784.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487649) 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, 2837 + ... + 3003.

It is an arithmetic number, because the mean of its divisors is an integer number (34965).

2⁴⁸⁷⁶⁴⁰ is an apocalyptic number.

487640 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 487640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (559440).

487640 is an abundant number, since it is smaller than the sum of its proper divisors (631240).

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

487640 is a wasteful number, since it uses less digits than its factorization.

487640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 487640 is about 698.3122510740. The cubic root of 487640 is about 78.7105790773.

The spelling of 487640 in words is "four hundred eighty-seven thousand, six hundred forty".