689922243 has 12 divisors (see below), whose sum is σ = 1049004840. Its totient is φ = 435740256.

The previous prime is 689922241. The next prime is 689922301. The reversal of 689922243 is 342229986.

It is not a de Polignac number, because 689922243 - 2¹ = 689922241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (689922241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2017146 + ... + 2017487.

It is an arithmetic number, because the mean of its divisors is an integer number (87417070).

Almost surely, 2^689922243 is an apocalyptic number.

689922243 is a deficient number, since it is larger than the sum of its proper divisors (359082597).

689922243 is a wasteful number, since it uses less digits than its factorization.

689922243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034658 (or 4034655 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 689922243 is about 26266.3709522271. The cubic root of 689922243 is about 883.6223975597.

The spelling of 689922243 in words is "six hundred eighty-nine million, nine hundred twenty-two thousand, two hundred forty-three".