6784645642 has 32 divisors (see below), whose sum is σ = 10799308800. Its totient is φ = 3191126400.

The previous prime is 6784645631. The next prime is 6784645643. The reversal of 6784645642 is 2465464876.

It is a self number, because there is not a number n which added to its sum of digits gives 6784645642.

It is not an unprimeable number, because it can be changed into a prime (6784645643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2355159 + ... + 2358037.

It is an arithmetic number, because the mean of its divisors is an integer number (337478400).

Almost surely, 2^6784645642 is an apocalyptic number.

6784645642 is a deficient number, since it is larger than the sum of its proper divisors (4014663158).

6784645642 is a wasteful number, since it uses less digits than its factorization.

6784645642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3942.

The product of its digits is 7741440, while the sum is 52.

The square root of 6784645642 is about 82368.9604280642. The cubic root of 6784645642 is about 1893.1094492084.

The spelling of 6784645642 in words is "six billion, seven hundred eighty-four million, six hundred forty-five thousand, six hundred forty-two".