6798978 has 20 divisors (see below), whose sum is σ = 15235110. Its totient is φ = 2266272.

The previous prime is 6798971. The next prime is 6798991. The reversal of 6798978 is 8798976.

It can be written as a sum of positive squares in only one way, i.e., 6036849 + 762129 = 2457^2 + 873^2 .

It is a super-2 number, since 2×6798978² = 92452203688968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (6798971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 20823 + ... + 21146.

Almost surely, 2^6798978 is an apocalyptic number.

6798978 is an abundant number, since it is smaller than the sum of its proper divisors (8436132).

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

6798978 is a wasteful number, since it uses less digits than its factorization.

6798978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41983 (or 41974 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 6798978 is about 2607.4849951630. The cubic root of 6798978 is about 189.4441557054. Note that the first 3 decimals are identical.

It can be divided in two parts, 6798 and 978, that added together give a 5-th power (7776 = 6⁵).

The spelling of 6798978 in words is "six million, seven hundred ninety-eight thousand, nine hundred seventy-eight".