546978664 has 8 divisors (see below), whose sum is σ = 1025585010. Its totient is φ = 273489328.

The previous prime is 546978569. The next prime is 546978673. The reversal of 546978664 is 466879645.

It can be written as a sum of positive squares in only one way, i.e., 517926564 + 29052100 = 22758^2 + 5390^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 34186159 + ... + 34186174.

Almost surely, 2^546978664 is an apocalyptic number.

It is an amenable number.

546978664 is a deficient number, since it is larger than the sum of its proper divisors (478606346).

546978664 is a wasteful number, since it uses less digits than its factorization.

546978664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68372339 (or 68372335 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 55.

The square root of 546978664 is about 23387.5749918627. The cubic root of 546978664 is about 817.8182454168.

The spelling of 546978664 in words is "five hundred forty-six million, nine hundred seventy-eight thousand, six hundred sixty-four".