546564420 has 72 divisors (see below), whose sum is σ = 1666608216. Its totient is φ = 144986112.

The previous prime is 546564413. The next prime is 546564437. The reversal of 546564420 is 24465645.

546564420 is a `hidden beast` number, since 5 + 4 + 6 + 5 + 644 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 968256 + 545596164 = 984^2 + 23358^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26874 + ... + 42606.

Almost surely, 2^546564420 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 546564420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833304108).

546564420 is an abundant number, since it is smaller than the sum of its proper divisors (1120043796).

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

546564420 is a wasteful number, since it uses less digits than its factorization.

546564420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15941 (or 15936 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 546564420 is about 23378.7172445367. The cubic root of 546564420 is about 817.6117401900.

The spelling of 546564420 in words is "five hundred forty-six million, five hundred sixty-four thousand, four hundred twenty".