1668055695 has 16 divisors (see below), whose sum is σ = 2809357440. Its totient is φ = 842806944.

The previous prime is 1668055681. The next prime is 1668055717. The reversal of 1668055695 is 5965508661.

It is a happy number.

It is not a de Polignac number, because 1668055695 - 2⁴ = 1668055679 is a prime.

It is a congruent number.

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, 2926129 + ... + 2926698.

It is an arithmetic number, because the mean of its divisors is an integer number (175584840).

Almost surely, 2^1668055695 is an apocalyptic number.

1668055695 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1668055695 is a deficient number, since it is larger than the sum of its proper divisors (1141301745).

1668055695 is a wasteful number, since it uses less digits than its factorization.

1668055695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5852854.

The product of its (nonzero) digits is 1944000, while the sum is 51.

The square root of 1668055695 is about 40841.8375566036. The cubic root of 1668055695 is about 1185.9603850754.

The spelling of 1668055695 in words is "one billion, six hundred sixty-eight million, fifty-five thousand, six hundred ninety-five".