6988971 has 32 divisors (see below), whose sum is σ = 10771200. Its totient is φ = 3991680.

The previous prime is 6988939. The next prime is 6988991. The reversal of 6988971 is 1798896.

It is a happy number.

It is not a de Polignac number, because 6988971 - 2⁵ = 6988939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6988971.

It is not an unprimeable number, because it can be changed into a prime (6988931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64065 + ... + 64173.

It is an arithmetic number, because the mean of its divisors is an integer number (336600).

Almost surely, 2^6988971 is an apocalyptic number.

6988971 is a deficient number, since it is larger than the sum of its proper divisors (3782229).

6988971 is a wasteful number, since it uses less digits than its factorization.

6988971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219.

The product of its digits is 217728, while the sum is 48.

The square root of 6988971 is about 2643.6662043458. Note that the first 3 decimals coincide. The cubic root of 6988971 is about 191.1926001437.

It can be divided in two parts, 698 and 8971, that added together give a palindrome (9669).

The spelling of 6988971 in words is "six million, nine hundred eighty-eight thousand, nine hundred seventy-one".