689221141 has 4 divisors (see below), whose sum is σ = 787681312. Its totient is φ = 590760972.

The previous prime is 689221129. The next prime is 689221147. The reversal of 689221141 is 141122986.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 689221141 - 2¹⁷ = 689090069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 689221097 and 689221106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689221147) 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, 49230075 + ... + 49230088.

It is an arithmetic number, because the mean of its divisors is an integer number (196920328).

Almost surely, 2^689221141 is an apocalyptic number.

It is an amenable number.

689221141 is a deficient number, since it is larger than the sum of its proper divisors (98460171).

689221141 is an equidigital number, since it uses as much as digits as its factorization.

689221141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98460170.

The product of its digits is 6912, while the sum is 34.

The square root of 689221141 is about 26253.0215594320. The cubic root of 689221141 is about 883.3229824664.

The spelling of 689221141 in words is "six hundred eighty-nine million, two hundred twenty-one thousand, one hundred forty-one".