6978568 has 48 divisors (see below), whose sum is σ = 14632380. Its totient is φ = 3108864.

The previous prime is 6978547. The next prime is 6978593. The reversal of 6978568 is 8658796.

It can be written as a sum of positive squares in 2 ways, for example, as 6874884 + 103684 = 2622^2 + 322^2 .

It is a super-2 number, since 2×6978568² = 97400822661248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71896 + ... + 71992.

Almost surely, 2^6978568 is an apocalyptic number.

6978568 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6978568 is an abundant number, since it is smaller than the sum of its proper divisors (7653812).

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

6978568 is a wasteful number, since it uses less digits than its factorization.

6978568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 139 counting only the distinct ones).

The product of its digits is 725760, while the sum is 49.

The square root of 6978568 is about 2641.6979388265. The cubic root of 6978568 is about 191.0976904022.

The spelling of 6978568 in words is "six million, nine hundred seventy-eight thousand, five hundred sixty-eight".