689150811 has 16 divisors (see below), whose sum is σ = 987444864. Its totient is φ = 425952384.

The previous prime is 689150807. The next prime is 689150851. The reversal of 689150811 is 118051986.

It is not a de Polignac number, because 689150811 - 2² = 689150807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 689150811.

It is not an unprimeable number, because it can be changed into a prime (689150851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97425 + ... + 104258.

It is an arithmetic number, because the mean of its divisors is an integer number (61715304).

Almost surely, 2^689150811 is an apocalyptic number.

689150811 is a deficient number, since it is larger than the sum of its proper divisors (298294053).

689150811 is a wasteful number, since it uses less digits than its factorization.

689150811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201770.

The product of its (nonzero) digits is 17280, while the sum is 39.

The square root of 689150811 is about 26251.6820603938. The cubic root of 689150811 is about 883.2929358844.

The spelling of 689150811 in words is "six hundred eighty-nine million, one hundred fifty thousand, eight hundred eleven".