545887680 has 448 divisors, whose sum is σ = 2064642048. Its totient is φ = 120913920.

The previous prime is 545887673. The next prime is 545887687. The reversal of 545887680 is 86788545.

It is an interprime number because it is at equal distance from previous prime (545887673) and next prime (545887687).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545887687) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6576919 + ... + 6577001.

It is an arithmetic number, because the mean of its divisors is an integer number (4608576).

Almost surely, 2^545887680 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 545887680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1032321024).

545887680 is an abundant number, since it is smaller than the sum of its proper divisors (1518754368).

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

545887680 is a wasteful number, since it uses less digits than its factorization.

545887680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 51.

The square root of 545887680 is about 23364.2393413524. The cubic root of 545887680 is about 817.2741532131.

The spelling of 545887680 in words is "five hundred forty-five million, eight hundred eighty-seven thousand, six hundred eighty".