6998578758 has 96 divisors (see below), whose sum is σ = 15988976640. Its totient is φ = 2209394880.

The previous prime is 6998578721. The next prime is 6998578771. The reversal of 6998578758 is 8578758996.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7061643 + ... + 7062633.

It is an arithmetic number, because the mean of its divisors is an integer number (166551840).

Almost surely, 2^6998578758 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6998578758, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7994488320).

6998578758 is an abundant number, since it is smaller than the sum of its proper divisors (8990397882).

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

6998578758 is a wasteful number, since it uses less digits than its factorization.

6998578758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274 (or 1271 counting only the distinct ones).

The product of its digits is 304819200, while the sum is 72.

The square root of 6998578758 is about 83657.5086767470. The cubic root of 6998578758 is about 1912.8017102886.

The spelling of 6998578758 in words is "six billion, nine hundred ninety-eight million, five hundred seventy-eight thousand, seven hundred fifty-eight".