689292841 has 4 divisors (see below), whose sum is σ = 689504212. Its totient is φ = 689081472.

The previous prime is 689292763. The next prime is 689292847. The reversal of 689292841 is 148292986.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 671017216 + 18275625 = 25904^2 + 4275^2 .

It is a cyclic number.

It is not a de Polignac number, because 689292841 - 2⁷ = 689292713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689292847) 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 3 ways as a sum of consecutive naturals, for example, 100716 + ... + 107341.

It is an arithmetic number, because the mean of its divisors is an integer number (172376053).

Almost surely, 2^689292841 is an apocalyptic number.

It is an amenable number.

689292841 is a deficient number, since it is larger than the sum of its proper divisors (211371).

689292841 is a wasteful number, since it uses less digits than its factorization.

689292841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211370.

The product of its digits is 497664, while the sum is 49.

The square root of 689292841 is about 26254.3870810194. The cubic root of 689292841 is about 883.3536122396.

The spelling of 689292841 in words is "six hundred eighty-nine million, two hundred ninety-two thousand, eight hundred forty-one".