545697216 has 224 divisors, whose sum is σ = 1693224960. Its totient is φ = 172108800.

The previous prime is 545697209. The next prime is 545697259. The reversal of 545697216 is 612796545.

545697216 is a `hidden beast` number, since 5 + 4 + 569 + 72 + 16 = 666.

Its product of digits (453600) is a multiple of the sum of its prime factors (280).

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 31 ways as a sum of consecutive naturals, for example, 3267565 + ... + 3267731.

It is an arithmetic number, because the mean of its divisors is an integer number (7559040).

Almost surely, 2^545697216 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 545697216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (846612480).

545697216 is an abundant number, since it is smaller than the sum of its proper divisors (1147527744).

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

545697216 is a wasteful number, since it uses less digits than its factorization.

545697216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 264 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 545697216 is about 23360.1630131299. The cubic root of 545697216 is about 817.1790912817.

The spelling of 545697216 in words is "five hundred forty-five million, six hundred ninety-seven thousand, two hundred sixteen".