6656460039 has 20 divisors (see below), whose sum is σ = 9946301640. Its totient is φ = 4436434800.

The previous prime is 6656460037. The next prime is 6656460073. The reversal of 6656460039 is 9300646566.

6656460039 is a `hidden beast` number, since 6 + 6 + 5 + 6 + 4 + 600 + 39 = 666.

It is not a de Polignac number, because 6656460039 - 2¹ = 6656460037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6656459976 and 6656460003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656460037) 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 19 ways as a sum of consecutive naturals, for example, 367897 + ... + 385565.

It is an arithmetic number, because the mean of its divisors is an integer number (497315082).

Almost surely, 2^6656460039 is an apocalyptic number.

6656460039 is a deficient number, since it is larger than the sum of its proper divisors (3289841601).

6656460039 is a wasteful number, since it uses less digits than its factorization.

6656460039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22332 (or 22323 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The square root of 6656460039 is about 81587.1315772285. The cubic root of 6656460039 is about 1881.1110867446. Note that the first 3 decimals are identical.

The spelling of 6656460039 in words is "six billion, six hundred fifty-six million, four hundred sixty thousand, thirty-nine".