6340645726 has 16 divisors (see below), whose sum is σ = 9628674048. Its totient is φ = 3131112600.

The previous prime is 6340645709. The next prime is 6340645733. The reversal of 6340645726 is 6275460436.

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, 1007971 + ... + 1014241.

It is an arithmetic number, because the mean of its divisors is an integer number (601792128).

Almost surely, 2^6340645726 is an apocalyptic number.

6340645726 is a deficient number, since it is larger than the sum of its proper divisors (3288028322).

6340645726 is a wasteful number, since it uses less digits than its factorization.

6340645726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12447.

The product of its (nonzero) digits is 725760, while the sum is 43.

The square root of 6340645726 is about 79628.1716856541. The cubic root of 6340645726 is about 1850.8781539242.

The spelling of 6340645726 in words is "six billion, three hundred forty million, six hundred forty-five thousand, seven hundred twenty-six".