6656573523 has 16 divisors (see below), whose sum is σ = 9008366976. Its totient is φ = 4371557760.

The previous prime is 6656573519. The next prime is 6656573527. The reversal of 6656573523 is 3253756566.

It is an interprime number because it is at equal distance from previous prime (6656573519) and next prime (6656573527).

It is not a de Polignac number, because 6656573523 - 2² = 6656573519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6656573527) 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, 47883 + ... + 124923.

It is an arithmetic number, because the mean of its divisors is an integer number (563022936).

Almost surely, 2^6656573523 is an apocalyptic number.

6656573523 is a deficient number, since it is larger than the sum of its proper divisors (2351793453).

6656573523 is a wasteful number, since it uses less digits than its factorization.

6656573523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77474.

The product of its digits is 3402000, while the sum is 48.

The square root of 6656573523 is about 81587.8270515890. The cubic root of 6656573523 is about 1881.1217768510.

The spelling of 6656573523 in words is "six billion, six hundred fifty-six million, five hundred seventy-three thousand, five hundred twenty-three".