689349169 has 8 divisors (see below), whose sum is σ = 744125760. Its totient is φ = 636639696.

The previous prime is 689349149. The next prime is 689349191. The reversal of 689349169 is 961943986.

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 689349169 - 2²¹ = 687252017 is a prime.

It is a super-2 number, since 2×689349169² = 950404553601981122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689349149) 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, 516087 + ... + 517420.

It is an arithmetic number, because the mean of its divisors is an integer number (93015720).

Almost surely, 2^689349169 is an apocalyptic number.

It is an amenable number.

689349169 is a deficient number, since it is larger than the sum of its proper divisors (54776591).

689349169 is a wasteful number, since it uses less digits than its factorization.

689349169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033559.

The product of its digits is 2519424, while the sum is 55.

The square root of 689349169 is about 26255.4597941076. The cubic root of 689349169 is about 883.3776737048.

The spelling of 689349169 in words is "six hundred eighty-nine million, three hundred forty-nine thousand, one hundred sixty-nine".