6989517 has 8 divisors (see below), whose sum is σ = 10354880. Its totient is φ = 4659660.

The previous prime is 6989509. The next prime is 6989519. The reversal of 6989517 is 7159896.

It is not a de Polignac number, because 6989517 - 2³ = 6989509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6989519) 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 7 ways as a sum of consecutive naturals, for example, 129409 + ... + 129462.

It is an arithmetic number, because the mean of its divisors is an integer number (1294360).

Almost surely, 2^6989517 is an apocalyptic number.

It is an amenable number.

6989517 is a deficient number, since it is larger than the sum of its proper divisors (3365363).

6989517 is a wasteful number, since it uses less digits than its factorization.

6989517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258880 (or 258874 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 6989517 is about 2643.7694680134. The cubic root of 6989517 is about 191.1975788662.

The spelling of 6989517 in words is "six million, nine hundred eighty-nine thousand, five hundred seventeen".