6978975 has 12 divisors (see below), whose sum is σ = 11538696. Its totient is φ = 3722080.

The previous prime is 6978973. The next prime is 6978991. The reversal of 6978975 is 5798796.

It is not a de Polignac number, because 6978975 - 2¹ = 6978973 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6978973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46452 + ... + 46601.

It is an arithmetic number, because the mean of its divisors is an integer number (961558).

Almost surely, 2^6978975 is an apocalyptic number.

6978975 is a deficient number, since it is larger than the sum of its proper divisors (4559721).

6978975 is a wasteful number, since it uses less digits than its factorization.

6978975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93066 (or 93061 counting only the distinct ones).

The product of its digits is 952560, while the sum is 51.

The square root of 6978975 is about 2641.7749714917. The cubic root of 6978975 is about 191.1014053596.

The spelling of 6978975 in words is "six million, nine hundred seventy-eight thousand, nine hundred seventy-five".