6726978 has 12 divisors (see below), whose sum is σ = 14575158. Its totient is φ = 2242320.

The previous prime is 6726961. The next prime is 6726989. The reversal of 6726978 is 8796276.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3583449 + 3143529 = 1893^2 + 1773^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186843 + ... + 186878.

Almost surely, 2^6726978 is an apocalyptic number.

6726978 is an abundant number, since it is smaller than the sum of its proper divisors (7848180).

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

6726978 is a wasteful number, since it uses less digits than its factorization.

6726978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373729 (or 373726 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 6726978 is about 2593.6418411184. The cubic root of 6726978 is about 188.7730542137.

The spelling of 6726978 in words is "six million, seven hundred twenty-six thousand, nine hundred seventy-eight".