581608 has 8 divisors (see below), whose sum is σ = 1090530. Its totient is φ = 290800.

The previous prime is 581599. The next prime is 581617. The reversal of 581608 is 806185.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (581599) and next prime (581617).

It can be written as a sum of positive squares in only one way, i.e., 492804 + 88804 = 702^2 + 298^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36343 + ... + 36358.

2⁵⁸¹⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

581608 is a deficient number, since it is larger than the sum of its proper divisors (508922).

581608 is a wasteful number, since it uses less digits than its factorization.

581608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72707 (or 72703 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 581608 is about 762.6322836072. The cubic root of 581608 is about 83.4725069945.

The spelling of 581608 in words is "five hundred eighty-one thousand, six hundred eight".