6659340726 has 16 divisors (see below), whose sum is σ = 13352234544. Its totient is φ = 2214188064.

The previous prime is 6659340707. The next prime is 6659340749. The reversal of 6659340726 is 6270439566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1395465 + ... + 1400228.

It is an arithmetic number, because the mean of its divisors is an integer number (834514659).

Almost surely, 2^6659340726 is an apocalyptic number.

6659340726 is an abundant number, since it is smaller than the sum of its proper divisors (6692893818).

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

6659340726 is a wasteful number, since it uses less digits than its factorization.

6659340726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796095.

The product of its (nonzero) digits is 1632960, while the sum is 48.

The square root of 6659340726 is about 81604.7837200737. The cubic root of 6659340726 is about 1881.3824076723.

The spelling of 6659340726 in words is "six billion, six hundred fifty-nine million, three hundred forty thousand, seven hundred twenty-six".