549640080 has 300 divisors, whose sum is σ = 2101295196. Its totient is φ = 133056000.

The previous prime is 549640079. The next prime is 549640097. The reversal of 549640080 is 80046945.

549640080 is a `hidden beast` number, since 5 + 4 + 9 + 640 + 0 + 8 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 346406544 + 203233536 = 18612^2 + 14256^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 783730 + ... + 784430.

Almost surely, 2^549640080 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 549640080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1050647598).

549640080 is an abundant number, since it is smaller than the sum of its proper divisors (1551655116).

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

549640080 is a wasteful number, since it uses less digits than its factorization.

549640080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 549640080 is about 23444.4040231352. The cubic root of 549640080 is about 819.1425103216.

The spelling of 549640080 in words is "five hundred forty-nine million, six hundred forty thousand, eighty".