6978245 has 16 divisors (see below), whose sum is σ = 9039600. Its totient is φ = 5151744.

The previous prime is 6978227. The next prime is 6978247. The reversal of 6978245 is 5428796.

It can be written as a sum of positive squares in 8 ways, for example, as 82369 + 6895876 = 287^2 + 2626^2 .

It is a cyclic number.

It is not a de Polignac number, because 6978245 - 2¹⁰ = 6977221 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6978247) 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 15 ways as a sum of consecutive naturals, for example, 3731 + ... + 5279.

It is an arithmetic number, because the mean of its divisors is an integer number (564975).

Almost surely, 2^6978245 is an apocalyptic number.

It is an amenable number.

6978245 is a deficient number, since it is larger than the sum of its proper divisors (2061355).

6978245 is a wasteful number, since it uses less digits than its factorization.

6978245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624.

The product of its digits is 120960, while the sum is 41.

The square root of 6978245 is about 2641.6368031961. The cubic root of 6978245 is about 191.0947420654.

The spelling of 6978245 in words is "six million, nine hundred seventy-eight thousand, two hundred forty-five".