550440660 has 192 divisors, whose sum is σ = 1932908544. Its totient is φ = 113702400.

The previous prime is 550440629. The next prime is 550440673. The reversal of 550440660 is 66044055.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1307250 + ... + 1307670.

It is an arithmetic number, because the mean of its divisors is an integer number (10067232).

Almost surely, 2^550440660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550440660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (966454272).

550440660 is an abundant number, since it is smaller than the sum of its proper divisors (1382467884).

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

550440660 is a wasteful number, since it uses less digits than its factorization.

550440660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 550440660 is about 23461.4718208385. The cubic root of 550440660 is about 819.5400255895.

It can be divided in two parts, 5504 and 40660, that added together give a palindrome (46164).

The spelling of 550440660 in words is "five hundred fifty million, four hundred forty thousand, six hundred sixty".