6997805 has 8 divisors (see below), whose sum is σ = 8424312. Its totient is φ = 5580288.

The previous prime is 6997789. The next prime is 6997807. The reversal of 6997805 is 5087996.

It can be written as a sum of positive squares in 4 ways, for example, as 128164 + 6869641 = 358^2 + 2621^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6997805 - 2⁴ = 6997789 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 (6997807) 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, 392 + ... + 3761.

It is an arithmetic number, because the mean of its divisors is an integer number (1053039).

Almost surely, 2^6997805 is an apocalyptic number.

It is an amenable number.

6997805 is a deficient number, since it is larger than the sum of its proper divisors (1426507).

6997805 is a wasteful number, since it uses less digits than its factorization.

6997805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4495.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 6997805 is about 2645.3364625318. The cubic root of 6997805 is about 191.2731215015.

The spelling of 6997805 in words is "six million, nine hundred ninety-seven thousand, eight hundred five".