2174636689 has 3 divisors (see below), whose sum is σ = 2174683323. Its totient is φ = 2174590056.

The previous prime is 2174636677. The next prime is 2174636731. The reversal of 2174636689 is 9866364712.

The square root of 2174636689 is 46633.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 543123025 + 1631513664 = 23305^2 + 40392^2 .

It is not a de Polignac number, because 2174636689 - 2⁵ = 2174636657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2174636389) 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 2 ways as a sum of consecutive naturals, for example, 23317 + ... + 69949.

It is an arithmetic number, because the mean of its divisors is an integer number (724894441).

Almost surely, 2^2174636689 is an apocalyptic number.

2174636689 is the 46633-rd square number.

2174636689 is the 23317-th centered octagonal number.

It is an amenable number.

2174636689 is a deficient number, since it is larger than the sum of its proper divisors (46634).

2174636689 is an frugal number, since it uses more digits than its factorization.

2174636689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93266 (or 46633 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 52.

The cubic root of 2174636689 is about 1295.5740390716.

The spelling of 2174636689 in words is "two billion, one hundred seventy-four million, six hundred thirty-six thousand, six hundred eighty-nine".