2166704797 has 12 divisors (see below), whose sum is σ = 2207968320. Its totient is φ = 2125863792.

The previous prime is 2166704789. The next prime is 2166704801. The reversal of 2166704797 is 7974076612.

It is not a de Polignac number, because 2166704797 - 2³ = 2166704789 is a prime.

It is a super-2 number, since 2×2166704797² = 9389219354685622418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2166704797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166704717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4142578 + ... + 4143100.

It is an arithmetic number, because the mean of its divisors is an integer number (183997360).

Almost surely, 2^2166704797 is an apocalyptic number.

It is an amenable number.

2166704797 is a deficient number, since it is larger than the sum of its proper divisors (41263523).

2166704797 is an frugal number, since it uses more digits than its factorization.

2166704797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 49.

The square root of 2166704797 is about 46547.8763962439. The cubic root of 2166704797 is about 1293.9969368718.

The spelling of 2166704797 in words is "two billion, one hundred sixty-six million, seven hundred four thousand, seven hundred ninety-seven".