6707989 has 4 divisors (see below), whose sum is σ = 6889324. Its totient is φ = 6526656.

The previous prime is 6707971. The next prime is 6707993. The reversal of 6707989 is 9897076.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6275025 + 432964 = 2505^2 + 658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6707989 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 (6707929) 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, 90612 + ... + 90685.

It is an arithmetic number, because the mean of its divisors is an integer number (1722331).

Almost surely, 2^6707989 is an apocalyptic number.

It is an amenable number.

6707989 is a deficient number, since it is larger than the sum of its proper divisors (181335).

6707989 is a wasteful number, since it uses less digits than its factorization.

6707989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181334.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 6707989 is about 2589.9785713399. The cubic root of 6707989 is about 188.5952631500.

The spelling of 6707989 in words is "six million, seven hundred seven thousand, nine hundred eighty-nine".