6989513 has 4 divisors (see below), whose sum is σ = 7073808. Its totient is φ = 6905220.

The previous prime is 6989509. The next prime is 6989519. The reversal of 6989513 is 3159896.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6989513 - 2² = 6989509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6989519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42023 + ... + 42188.

It is an arithmetic number, because the mean of its divisors is an integer number (1768452).

Almost surely, 2^6989513 is an apocalyptic number.

It is an amenable number.

6989513 is a deficient number, since it is larger than the sum of its proper divisors (84295).

6989513 is an equidigital number, since it uses as much as digits as its factorization.

6989513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84294.

The product of its digits is 58320, while the sum is 41.

The square root of 6989513 is about 2643.7687115177. The cubic root of 6989513 is about 191.1975423930.

The spelling of 6989513 in words is "six million, nine hundred eighty-nine thousand, five hundred thirteen".