689013011 has 4 divisors (see below), whose sum is σ = 695835024. Its totient is φ = 682191000.

The previous prime is 689013007. The next prime is 689013029. The reversal of 689013011 is 110310986.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 689013011 - 2² = 689013007 is a prime.

It is a super-2 number, since 2×689013011² = 949477858654572242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689016011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3410855 + ... + 3411056.

It is an arithmetic number, because the mean of its divisors is an integer number (173958756).

Almost surely, 2^689013011 is an apocalyptic number.

689013011 is a deficient number, since it is larger than the sum of its proper divisors (6822013).

689013011 is a wasteful number, since it uses less digits than its factorization.

689013011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6822012.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 689013011 is about 26249.0573354549. The cubic root of 689013011 is about 883.2340586507.

Adding to 689013011 its reverse (110310986), we get a palindrome (799323997).

The spelling of 689013011 in words is "six hundred eighty-nine million, thirteen thousand, eleven".