6678959826 has 32 divisors (see below), whose sum is σ = 16654030848. Its totient is φ = 1734794640.

The previous prime is 6678959809. The next prime is 6678959851. The reversal of 6678959826 is 6289598766.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7227850 + ... + 7228773.

It is an arithmetic number, because the mean of its divisors is an integer number (520438464).

Almost surely, 2^6678959826 is an apocalyptic number.

6678959826 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6678959826 is an abundant number, since it is smaller than the sum of its proper divisors (9975071022).

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

6678959826 is a wasteful number, since it uses less digits than its factorization.

6678959826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14456646.

The product of its digits is 78382080, while the sum is 66.

The square root of 6678959826 is about 81724.9033404139. The cubic root of 6678959826 is about 1883.2281780186.

The spelling of 6678959826 in words is "six billion, six hundred seventy-eight million, nine hundred fifty-nine thousand, eight hundred twenty-six".