6997768 has 8 divisors (see below), whose sum is σ = 13120830. Its totient is φ = 3498880.

The previous prime is 6997747. The next prime is 6997789. The reversal of 6997768 is 8677996.

It is an interprime number because it is at equal distance from previous prime (6997747) and next prime (6997789).

It can be written as a sum of positive squares in only one way, i.e., 5207524 + 1790244 = 2282^2 + 1338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437353 + ... + 437368.

Almost surely, 2^6997768 is an apocalyptic number.

It is an amenable number.

6997768 is a deficient number, since it is larger than the sum of its proper divisors (6123062).

6997768 is a wasteful number, since it uses less digits than its factorization.

6997768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874727 (or 874723 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 52.

The square root of 6997768 is about 2645.3294690832. The cubic root of 6997768 is about 191.2727843902.

The spelling of 6997768 in words is "six million, nine hundred ninety-seven thousand, seven hundred sixty-eight".