6997766 has 8 divisors (see below), whose sum is σ = 10536480. Its totient is φ = 3485608.

The previous prime is 6997747. The next prime is 6997789. The reversal of 6997766 is 6677996.

It is a happy number.

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

It is a d-powerful number, because it can be written as 6² + 9⁶ + 9⁷ + 7 + 7⁴ + 6⁴ + 6⁸ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5966 + ... + 7041.

It is an arithmetic number, because the mean of its divisors is an integer number (1317060).

Almost surely, 2^6997766 is an apocalyptic number.

6997766 is a deficient number, since it is larger than the sum of its proper divisors (3538714).

6997766 is a wasteful number, since it uses less digits than its factorization.

6997766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13278.

The product of its digits is 857304, while the sum is 50.

The square root of 6997766 is about 2645.3290910584. The cubic root of 6997766 is about 191.2727661679.

The spelling of 6997766 in words is "six million, nine hundred ninety-seven thousand, seven hundred sixty-six".