6690105569 has 16 divisors (see below), whose sum is σ = 7830349056. Its totient is φ = 5597592000.

The previous prime is 6690105533. The next prime is 6690105581. The reversal of 6690105569 is 9655010966.

It is not a de Polignac number, because 6690105569 - 2⁸ = 6690105313 is a prime.

It is a super-2 number, since 2×6690105569² = 89515025048729627522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6690105269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16442 + ... + 116835.

It is an arithmetic number, because the mean of its divisors is an integer number (489396816).

Almost surely, 2^6690105569 is an apocalyptic number.

It is an amenable number.

6690105569 is a deficient number, since it is larger than the sum of its proper divisors (1140243487).

6690105569 is a wasteful number, since it uses less digits than its factorization.

6690105569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133456.

The product of its (nonzero) digits is 437400, while the sum is 47.

The square root of 6690105569 is about 81793.0655312539. The cubic root of 6690105569 is about 1884.2751630146.

The spelling of 6690105569 in words is "six billion, six hundred ninety million, one hundred five thousand, five hundred sixty-nine".