6978575 has 6 divisors (see below), whose sum is σ = 8653464. Its totient is φ = 5582840.

The previous prime is 6978547. The next prime is 6978593. The reversal of 6978575 is 5758796.

It is a happy number.

It is not a de Polignac number, because 6978575 - 2⁶ = 6978511 is a prime.

It is a Duffinian 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 5 ways as a sum of consecutive naturals, for example, 139547 + ... + 139596.

It is an arithmetic number, because the mean of its divisors is an integer number (1442244).

Almost surely, 2^6978575 is an apocalyptic number.

6978575 is a deficient number, since it is larger than the sum of its proper divisors (1674889).

6978575 is a wasteful number, since it uses less digits than its factorization.

6978575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279153 (or 279148 counting only the distinct ones).

The product of its digits is 529200, while the sum is 47.

The square root of 6978575 is about 2641.6992637316. The cubic root of 6978575 is about 191.0977542971.

The spelling of 6978575 in words is "six million, nine hundred seventy-eight thousand, five hundred seventy-five".