60809 has 12 divisors (see below), whose sum is σ = 75924. Its totient is φ = 48384.

The previous prime is 60793. The next prime is 60811. The reversal of 60809 is 90806.

60809 = T₄₂ + T₄₃ + ... + T₇₅.

It can be written as a sum of positive squares in 2 ways, for example, as 41209 + 19600 = 203^2 + 140^2 .

It is not a de Polignac number, because 60809 - 2⁴ = 60793 is a prime.

It is an Ulam number.

60809 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 797 + ... + 869.

It is an arithmetic number, because the mean of its divisors is an integer number (6327).

2⁶⁰⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

60809 is a deficient number, since it is larger than the sum of its proper divisors (15115).

60809 is a wasteful number, since it uses less digits than its factorization.

60809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 60809 is about 246.5948093533. The cubic root of 60809 is about 39.3238430294.

The spelling of 60809 in words is "sixty thousand, eight hundred nine".