608981 has 4 divisors (see below), whose sum is σ = 610764. Its totient is φ = 607200.

The previous prime is 608977. The next prime is 608987. The reversal of 608981 is 189806.

608981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 189806 = 2 ⋅94903.

It can be written as a sum of positive squares in 2 ways, for example, as 401956 + 207025 = 634^2 + 455^2 .

It is a cyclic number.

It is not a de Polignac number, because 608981 - 2² = 608977 is a prime.

It is a super-2 number, since 2×608981² = 741715716722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 608981.

It is not an unprimeable number, because it can be changed into a prime (608987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200 + ... + 1121.

It is an arithmetic number, because the mean of its divisors is an integer number (152691).

2⁶⁰⁸⁹⁸¹ is an apocalyptic number.

It is an amenable number.

608981 is a deficient number, since it is larger than the sum of its proper divisors (1783).

608981 is a wasteful number, since it uses less digits than its factorization.

608981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 608981 is about 780.3723470242. The cubic root of 608981 is about 84.7620101727.

The spelling of 608981 in words is "six hundred eight thousand, nine hundred eighty-one".