546641478 has 48 divisors (see below), whose sum is σ = 1219152480. Its totient is φ = 176888448.

The previous prime is 546641467. The next prime is 546641489. The reversal of 546641478 is 874146645.

546641478 is a `hidden beast` number, since 546 + 64 + 1 + 47 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (546641467) and next prime (546641489).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 483618 + ... + 484746.

It is an arithmetic number, because the mean of its divisors is an integer number (25399010).

Almost surely, 2^546641478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 546641478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (609576240).

546641478 is an abundant number, since it is smaller than the sum of its proper divisors (672511002).

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

546641478 is a wasteful number, since it uses less digits than its factorization.

546641478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901 (or 1898 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 546641478 is about 23380.3652238369. The cubic root of 546641478 is about 817.6501623549.

The spelling of 546641478 in words is "five hundred forty-six million, six hundred forty-one thousand, four hundred seventy-eight".