486615640 has 64 divisors (see below), whose sum is σ = 1270022400. Its totient is φ = 164343168.

The previous prime is 486615583. The next prime is 486615653. The reversal of 486615640 is 46516684.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 486615593 and 486615602.

It is a congruent number.

It is an unprimeable number.

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, 5791 + ... + 31729.

It is an arithmetic number, because the mean of its divisors is an integer number (19844100).

Almost surely, 2^486615640 is an apocalyptic number.

486615640 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 486615640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (635011200).

486615640 is an abundant number, since it is smaller than the sum of its proper divisors (783406760).

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

486615640 is a wasteful number, since it uses less digits than its factorization.

486615640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26024 (or 26020 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 486615640 is about 22059.3662646958. The cubic root of 486615640 is about 786.5542603284.

The spelling of 486615640 in words is "four hundred eighty-six million, six hundred fifteen thousand, six hundred forty".