6999975 has 36 divisors (see below), whose sum is σ = 12796056. Its totient is φ = 3656640.

The previous prime is 6999973. The next prime is 6999989. The reversal of 6999975 is 5799996.

It is not a de Polignac number, because 6999975 - 2¹ = 6999973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6999973) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11632 + ... + 12218.

It is an arithmetic number, because the mean of its divisors is an integer number (355446).

Almost surely, 2^6999975 is an apocalyptic number.

6999975 is a deficient number, since it is larger than the sum of its proper divisors (5796081).

6999975 is a wasteful number, since it uses less digits than its factorization.

6999975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656 (or 648 counting only the distinct ones).

The product of its digits is 1377810, while the sum is 54.

The square root of 6999975 is about 2645.7465865045. The cubic root of 6999975 is about 191.2928905471.

The spelling of 6999975 in words is "six million, nine hundred ninety-nine thousand, nine hundred seventy-five".