6984407678977 has 8 divisors (see below), whose sum is σ = 7158837255552. Its totient is φ = 6812042358000.

The previous prime is 6984407678939. The next prime is 6984407679017. The reversal of 6984407678977 is 7798767044896.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6984407678977 - 2⁷ = 6984407678849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6984407678977.

It is not an unprimeable number, because it can be changed into a prime (6984407678077) 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, 516057049 + ... + 516070582.

It is an arithmetic number, because the mean of its divisors is an integer number (894854656944).

Almost surely, 2^{6984407678977} is an apocalyptic number.

6984407678977 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

6984407678977 is a deficient number, since it is larger than the sum of its proper divisors (174429576575).

6984407678977 is a wasteful number, since it uses less digits than its factorization.

6984407678977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032127799.

The product of its (nonzero) digits is 7169347584, while the sum is 82.

The spelling of 6984407678977 in words is "six trillion, nine hundred eighty-four billion, four hundred seven million, six hundred seventy-eight thousand, nine hundred seventy-seven".