6978996 has 18 divisors (see below), whose sum is σ = 17641442. Its totient is φ = 2326320.

The previous prime is 6978991. The next prime is 6979001. The reversal of 6978996 is 6998796.

It is an interprime number because it is at equal distance from previous prime (6978991) and next prime (6979001).

It can be written as a sum of positive squares in only one way, i.e., 6687396 + 291600 = 2586^2 + 540^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6978991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96895 + ... + 96966.

Almost surely, 2^6978996 is an apocalyptic number.

It is an amenable number.

6978996 is an abundant number, since it is smaller than the sum of its proper divisors (10662446).

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

6978996 is a wasteful number, since it uses less digits than its factorization.

6978996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193871 (or 193866 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 6978996 is about 2641.7789460892. The cubic root of 6978996 is about 191.1015970365.

The spelling of 6978996 in words is "six million, nine hundred seventy-eight thousand, nine hundred ninety-six".