545643736 has 64 divisors (see below), whose sum is σ = 1158094080. Its totient is φ = 238826880.

The previous prime is 545643677. The next prime is 545643793. The reversal of 545643736 is 637346545.

It is a junction number, because it is equal to n+sod(n) for n = 545643692 and 545643701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334555 + ... + 336181.

It is an arithmetic number, because the mean of its divisors is an integer number (18095220).

Almost surely, 2^545643736 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 545643736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (579047040).

545643736 is an abundant number, since it is smaller than the sum of its proper divisors (612450344).

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

545643736 is a wasteful number, since it uses less digits than its factorization.

545643736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784 (or 1780 counting only the distinct ones).

The product of its digits is 907200, while the sum is 43.

The square root of 545643736 is about 23359.0183012900. The cubic root of 545643736 is about 817.1523950576.

The spelling of 545643736 in words is "five hundred forty-five million, six hundred forty-three thousand, seven hundred thirty-six".