6994609 has 4 divisors (see below), whose sum is σ = 7012980. Its totient is φ = 6976240.

The previous prime is 6994607. The next prime is 6994613. The reversal of 6994609 is 9064996.

It is a happy number.

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 4963984 + 2030625 = 2228^2 + 1425^2 .

It is a cyclic number.

It is not a de Polignac number, because 6994609 - 2¹ = 6994607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6994601) 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 3 ways as a sum of consecutive naturals, for example, 8602 + ... + 9379.

It is an arithmetic number, because the mean of its divisors is an integer number (1753245).

Almost surely, 2^6994609 is an apocalyptic number.

It is an amenable number.

6994609 is a deficient number, since it is larger than the sum of its proper divisors (18371).

6994609 is a wasteful number, since it uses less digits than its factorization.

6994609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18370.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 6994609 is about 2644.7323115960. The cubic root of 6994609 is about 191.2439979890.

The spelling of 6994609 in words is "six million, nine hundred ninety-four thousand, six hundred nine".