6774767780 has 24 divisors (see below), whose sum is σ = 15520377600. Its totient is φ = 2463551840.

The previous prime is 6774767743. The next prime is 6774767789. The reversal of 6774767780 is 877674776.

It is a happy number.

It is a super-2 number, since 2×6774767780² = 91794956945852256800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6774767789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15396980 + ... + 15397419.

It is an arithmetic number, because the mean of its divisors is an integer number (646682400).

Almost surely, 2^6774767780 is an apocalyptic number.

It is an amenable number.

6774767780 is an abundant number, since it is smaller than the sum of its proper divisors (8745609820).

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

6774767780 is a wasteful number, since it uses less digits than its factorization.

6774767780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30794419 (or 30794417 counting only the distinct ones).

The product of its (nonzero) digits is 19361664, while the sum is 59.

The square root of 6774767780 is about 82308.9775176438. The cubic root of 6774767780 is about 1892.1902679983.

The spelling of 6774767780 in words is "six billion, seven hundred seventy-four million, seven hundred sixty-seven thousand, seven hundred eighty".