545327640 has 480 divisors, whose sum is σ = 2189935440. Its totient is φ = 120890880.

The previous prime is 545327639. The next prime is 545327663. The reversal of 545327640 is 46723545.

545327640 is a `hidden beast` number, since 5 + 4 + 5 + 3 + 2 + 7 + 640 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 545327595 and 545327604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 5096467 + ... + 5096573.

Almost surely, 2^545327640 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 545327640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1094967720).

545327640 is an abundant number, since it is smaller than the sum of its proper divisors (1644607800).

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

545327640 is a wasteful number, since it uses less digits than its factorization.

545327640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The square root of 545327640 is about 23352.2512833345. The cubic root of 545327640 is about 816.9945701616.

The spelling of 545327640 in words is "five hundred forty-five million, three hundred twenty-seven thousand, six hundred forty".