6869897866 has 32 divisors (see below), whose sum is σ = 11204479440. Its totient is φ = 3140315136.

The previous prime is 6869897857. The next prime is 6869897911. The reversal of 6869897866 is 6687989686.

It can be written as a sum of positive squares in 8 ways, for example, as 6764240025 + 105657841 = 82245^2 + 10279^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1170010 + ... + 1175866.

Almost surely, 2^6869897866 is an apocalyptic number.

6869897866 is a deficient number, since it is larger than the sum of its proper divisors (4334581574).

6869897866 is a wasteful number, since it uses less digits than its factorization.

6869897866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6298.

The product of its digits is 376233984, while the sum is 73.

The square root of 6869897866 is about 82884.8470228425. The cubic root of 6869897866 is about 1901.0057340192.

The spelling of 6869897866 in words is "six billion, eight hundred sixty-nine million, eight hundred ninety-seven thousand, eight hundred sixty-six".