546643641 has 4 divisors (see below), whose sum is σ = 728858192. Its totient is φ = 364429092.

The previous prime is 546643639. The next prime is 546643651. The reversal of 546643641 is 146346645.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 546643641 - 2¹ = 546643639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 546643641.

It is not an unprimeable number, because it can be changed into a prime (546643651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91107271 + ... + 91107276.

It is an arithmetic number, because the mean of its divisors is an integer number (182214548).

Almost surely, 2^546643641 is an apocalyptic number.

It is an amenable number.

546643641 is a deficient number, since it is larger than the sum of its proper divisors (182214551).

546643641 is a wasteful number, since it uses less digits than its factorization.

546643641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182214550.

The product of its digits is 207360, while the sum is 39.

The square root of 546643641 is about 23380.4114805535. The cubic root of 546643641 is about 817.6512408039.

The spelling of 546643641 in words is "five hundred forty-six million, six hundred forty-three thousand, six hundred forty-one".