6646977124 has 6 divisors (see below), whose sum is σ = 11632209974. Its totient is φ = 3323488560.

The previous prime is 6646977121. The next prime is 6646977133. The reversal of 6646977124 is 4217796466.

It can be written as a sum of positive squares in only one way, i.e., 3734432100 + 2912545024 = 61110^2 + 53968^2 .

It is a super-2 number, since 2×6646977124² = 88364609773958622752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6646977121) 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 as a sum of consecutive naturals, namely, 830872137 + ... + 830872144.

Almost surely, 2^6646977124 is an apocalyptic number.

It is an amenable number.

6646977124 is a deficient number, since it is larger than the sum of its proper divisors (4985232850).

6646977124 is a wasteful number, since it uses less digits than its factorization.

6646977124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661744285 (or 1661744283 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 52.

The square root of 6646977124 is about 81528.9956027915. The cubic root of 6646977124 is about 1880.2173737638.

The spelling of 6646977124 in words is "six billion, six hundred forty-six million, nine hundred seventy-seven thousand, one hundred twenty-four".