244666689 has 16 divisors (see below), whose sum is σ = 337267392. Its totient is φ = 157667328.

The previous prime is 244666651. The next prime is 244666699. The reversal of 244666689 is 986666442.

It is not a de Polignac number, because 244666689 - 2⁷ = 244666561 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (244666619) 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, 2737 + ... + 22289.

It is an arithmetic number, because the mean of its divisors is an integer number (21079212).

Almost surely, 2^244666689 is an apocalyptic number.

It is an amenable number.

244666689 is a deficient number, since it is larger than the sum of its proper divisors (92600703).

244666689 is a wasteful number, since it uses less digits than its factorization.

244666689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19696.

The product of its digits is 2985984, while the sum is 51.

The square root of 244666689 is about 15641.8249894314. The cubic root of 244666689 is about 625.4485859027.

The spelling of 244666689 in words is "two hundred forty-four million, six hundred sixty-six thousand, six hundred eighty-nine".