546646646 has 32 divisors (see below), whose sum is σ = 1029806400. Its totient is φ = 216252288.

The previous prime is 546646631. The next prime is 546646649. The reversal of 546646646 is 646646645.

It is a self number, because there is not a number n which added to its sum of digits gives 546646646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (546646649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21731 + ... + 39566.

It is an arithmetic number, because the mean of its divisors is an integer number (32181450).

Almost surely, 2^546646646 is an apocalyptic number.

546646646 is a deficient number, since it is larger than the sum of its proper divisors (483159754).

546646646 is a wasteful number, since it uses less digits than its factorization.

546646646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61333 (or 61319 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 47.

The square root of 546646646 is about 23380.4757436627. The cubic root of 546646646 is about 817.6527390606.

Subtracting 546646646 from its reverse (646646645), we obtain a palindrome (99999999).

The spelling of 546646646 in words is "five hundred forty-six million, six hundred forty-six thousand, six hundred forty-six".