6990678 has 16 divisors (see below), whose sum is σ = 15534960. Its totient is φ = 2330208.

The previous prime is 6990677. The next prime is 6990679. The reversal of 6990678 is 8760996.

It is an interprime number because it is at equal distance from previous prime (6990677) and next prime (6990679).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990673) 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 7 ways as a sum of consecutive naturals, for example, 64675 + ... + 64782.

It is an arithmetic number, because the mean of its divisors is an integer number (970935).

Almost surely, 2^6990678 is an apocalyptic number.

6990678 is an abundant number, since it is smaller than the sum of its proper divisors (8544282).

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

6990678 is a wasteful number, since it uses less digits than its factorization.

6990678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129468 (or 129462 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 6990678 is about 2643.9890317473. The cubic root of 6990678 is about 191.2081646286.

The spelling of 6990678 in words is "six million, nine hundred ninety thousand, six hundred seventy-eight".