486640 has 80 divisors (see below), whose sum is σ = 1428480. Its totient is φ = 149760.

The previous prime is 486637. The next prime is 486641. The reversal of 486640 is 46684.

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

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 486599 and 486608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (486641) 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 15 ways as a sum of consecutive naturals, for example, 6121 + ... + 6199.

It is an arithmetic number, because the mean of its divisors is an integer number (17856).

2⁴⁸⁶⁶⁴⁰ is an apocalyptic number.

486640 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 486640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (714240).

486640 is an abundant number, since it is smaller than the sum of its proper divisors (941840).

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

486640 is a wasteful number, since it uses less digits than its factorization.

486640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 486640 is about 697.5958715474. The cubic root of 486640 is about 78.6567385089.

The spelling of 486640 in words is "four hundred eighty-six thousand, six hundred forty".