6978605 has 8 divisors (see below), whose sum is σ = 8815200. Its totient is φ = 5288976.

The previous prime is 6978593. The next prime is 6978613. The reversal of 6978605 is 5068796.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6978605 - 2¹² = 6974509 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 36635 + ... + 36824.

It is an arithmetic number, because the mean of its divisors is an integer number (1101900).

Almost surely, 2^6978605 is an apocalyptic number.

It is an amenable number.

6978605 is a deficient number, since it is larger than the sum of its proper divisors (1836595).

6978605 is a wasteful number, since it uses less digits than its factorization.

6978605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73483.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 6978605 is about 2641.7049418889. The cubic root of 6978605 is about 191.0980281316.

The spelling of 6978605 in words is "six million, nine hundred seventy-eight thousand, six hundred five".