6998445 has 12 divisors (see below), whose sum is σ = 12130716. Its totient is φ = 3732480.

The previous prime is 6998423. The next prime is 6998447. The reversal of 6998445 is 5448996.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2812329 + 4186116 = 1677^2 + 2046^2 .

It is not a de Polignac number, because 6998445 - 2¹³ = 6990253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 155521 = 6998445 / (6 + 9 + 9 + 8 + 4 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 6998445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6998447) 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 11 ways as a sum of consecutive naturals, for example, 77716 + ... + 77805.

It is an arithmetic number, because the mean of its divisors is an integer number (1010893).

Almost surely, 2^6998445 is an apocalyptic number.

It is an amenable number.

6998445 is a deficient number, since it is larger than the sum of its proper divisors (5132271).

6998445 is a wasteful number, since it uses less digits than its factorization.

6998445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155532 (or 155529 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 6998445 is about 2645.4574273649. The cubic root of 6998445 is about 191.2789524283.

The spelling of 6998445 in words is "six million, nine hundred ninety-eight thousand, four hundred forty-five".