6656426634 has 32 divisors (see below), whose sum is σ = 15640277184. Its totient is φ = 1861937280.

The previous prime is 6656426633. The next prime is 6656426713. The reversal of 6656426634 is 4366246566.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6656426633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3878179 + ... + 3879894.

It is an arithmetic number, because the mean of its divisors is an integer number (488758662).

Almost surely, 2^6656426634 is an apocalyptic number.

6656426634 is an abundant number, since it is smaller than the sum of its proper divisors (8983850550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6656426634 is a wasteful number, since it uses less digits than its factorization.

6656426634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7758102.

The product of its digits is 3732480, while the sum is 48.

The square root of 6656426634 is about 81586.9268571871. The cubic root of 6656426634 is about 1881.1079399959.

It can be divided in two parts, 665642 and 6634, that added together give a palindrome (672276).

The spelling of 6656426634 in words is "six billion, six hundred fifty-six million, four hundred twenty-six thousand, six hundred thirty-four".