2169680705 has 8 divisors (see below), whose sum is σ = 2603994792. Its totient is φ = 1735492608.

The previous prime is 2169680677. The next prime is 2169680729. The reversal of 2169680705 is 5070869612.

It can be written as a sum of positive squares in 4 ways, for example, as 225840784 + 1943839921 = 15028^2 + 44089^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2169680705 - 2²⁰ = 2168632129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11807 + ... + 66923.

It is an arithmetic number, because the mean of its divisors is an integer number (325499349).

Almost surely, 2^2169680705 is an apocalyptic number.

It is an amenable number.

2169680705 is a deficient number, since it is larger than the sum of its proper divisors (434314087).

2169680705 is an equidigital number, since it uses as much as digits as its factorization.

2169680705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62995.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 2169680705 is about 46579.8315261015. The cubic root of 2169680705 is about 1294.5890886330.

The spelling of 2169680705 in words is "two billion, one hundred sixty-nine million, six hundred eighty thousand, seven hundred five".