6702778771 has 16 divisors (see below), whose sum is σ = 7440969088. Its totient is φ = 5997628800.

The previous prime is 6702778763. The next prime is 6702778781. The reversal of 6702778771 is 1778772076.

It is a cyclic number.

It is not a de Polignac number, because 6702778771 - 2³ = 6702778763 is a prime.

It is the 81871-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6702778781) by changing a digit.

It is a nontrivial repunit in base 81870.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104641 + ... + 156061.

It is an arithmetic number, because the mean of its divisors is an integer number (465060568).

Almost surely, 2^6702778771 is an apocalyptic number.

6702778771 is a deficient number, since it is larger than the sum of its proper divisors (738190317).

6702778771 is a wasteful number, since it uses less digits than its factorization.

6702778771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51742.

The product of its (nonzero) digits is 1613472, while the sum is 52.

The square root of 6702778771 is about 81870.5000045804. The cubic root of 6702778771 is about 1885.4642193359.

The spelling of 6702778771 in words is "six billion, seven hundred two million, seven hundred seventy-eight thousand, seven hundred seventy-one".