689393911 has 8 divisors (see below), whose sum is σ = 738149760. Its totient is φ = 641549568.

The previous prime is 689393897. The next prime is 689393917. The reversal of 689393911 is 119393986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 689393911 - 2¹¹ = 689391863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689393917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226311 + ... + 229336.

It is an arithmetic number, because the mean of its divisors is an integer number (92268720).

Almost surely, 2^689393911 is an apocalyptic number.

689393911 is a deficient number, since it is larger than the sum of its proper divisors (48755849).

689393911 is a wasteful number, since it uses less digits than its factorization.

689393911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455753.

The product of its digits is 314928, while the sum is 49.

The square root of 689393911 is about 26256.3118316339. The cubic root of 689393911 is about 883.3967850785.

The spelling of 689393911 in words is "six hundred eighty-nine million, three hundred ninety-three thousand, nine hundred eleven".