689539211 has 4 divisors (see below), whose sum is σ = 690133272. Its totient is φ = 688945152.

The previous prime is 689539187. The next prime is 689539217. The reversal of 689539211 is 112935986.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112935986 = 2 ⋅56467993.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-689539211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689539217) 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, 295286 + ... + 297611.

It is an arithmetic number, because the mean of its divisors is an integer number (172533318).

Almost surely, 2^689539211 is an apocalyptic number.

689539211 is a deficient number, since it is larger than the sum of its proper divisors (594061).

689539211 is a wasteful number, since it uses less digits than its factorization.

689539211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594060.

The product of its digits is 116640, while the sum is 44.

The square root of 689539211 is about 26259.0786395867. The cubic root of 689539211 is about 883.4588437139.

The spelling of 689539211 in words is "six hundred eighty-nine million, five hundred thirty-nine thousand, two hundred eleven".