6779987802 has 36 divisors (see below), whose sum is σ = 17088338826. Its totient is φ = 1937139120.

The previous prime is 6779987791. The next prime is 6779987827. The reversal of 6779987802 is 2087899776.

It can be written as a sum of positive squares in only one way, i.e., 3680727561 + 3099260241 = 60669^2 + 55671^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 6779987802.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 3842649 + ... + 3844412.

Almost surely, 2^6779987802 is an apocalyptic number.

6779987802 is an abundant number, since it is smaller than the sum of its proper divisors (10308351024).

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

6779987802 is a wasteful number, since it uses less digits than its factorization.

6779987802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7687083 (or 7687073 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 63.

The square root of 6779987802 is about 82340.6813306764. The cubic root of 6779987802 is about 1892.6761266721.

The spelling of 6779987802 in words is "six billion, seven hundred seventy-nine million, nine hundred eighty-seven thousand, eight hundred two".