545831680 has 144 divisors (see below), whose sum is σ = 1372783104. Its totient is φ = 207728640.

The previous prime is 545831617. The next prime is 545831687. The reversal of 545831680 is 86138545.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (545831687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2586775 + ... + 2586985.

It is an arithmetic number, because the mean of its divisors is an integer number (9533216).

Almost surely, 2^545831680 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 545831680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (686391552).

545831680 is an abundant number, since it is smaller than the sum of its proper divisors (826951424).

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

545831680 is a wasteful number, since it uses less digits than its factorization.

545831680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 545831680 is about 23363.0408979653. The cubic root of 545831680 is about 817.2462055117.

The spelling of 545831680 in words is "five hundred forty-five million, eight hundred thirty-one thousand, six hundred eighty".