6820729783 has 36 divisors (see below), whose sum is σ = 8612711856. Its totient is φ = 5367129600.

The previous prime is 6820729717. The next prime is 6820729829. The reversal of 6820729783 is 3879270286.

It is not a de Polignac number, because 6820729783 - 2¹³ = 6820721591 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6820729783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6820729283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1397838 + ... + 1402708.

It is an arithmetic number, because the mean of its divisors is an integer number (239241996).

Almost surely, 2^6820729783 is an apocalyptic number.

6820729783 is a deficient number, since it is larger than the sum of its proper divisors (1791982073).

6820729783 is a wasteful number, since it uses less digits than its factorization.

6820729783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4984 (or 4936 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 6820729783 is about 82587.7096364828. The cubic root of 6820729783 is about 1896.4596846284.

The spelling of 6820729783 in words is "six billion, eight hundred twenty million, seven hundred twenty-nine thousand, seven hundred eighty-three".