545731680 has 192 divisors, whose sum is σ = 1949149440. Its totient is φ = 127236096.

The previous prime is 545731679. The next prime is 545731729. The reversal of 545731680 is 86137545.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116259 + ... + 120861.

It is an arithmetic number, because the mean of its divisors is an integer number (10151820).

Almost surely, 2^545731680 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 545731680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974574720).

545731680 is an abundant number, since it is smaller than the sum of its proper divisors (1403417760).

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

545731680 is a wasteful number, since it uses less digits than its factorization.

545731680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4653 (or 4645 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 545731680 is about 23360.9006675684. The cubic root of 545731680 is about 817.1962941472.

The spelling of 545731680 in words is "five hundred forty-five million, seven hundred thirty-one thousand, six hundred eighty".