604981 has 8 divisors (see below), whose sum is σ = 657720. Its totient is φ = 553152.

The previous prime is 604973. The next prime is 604997. The reversal of 604981 is 189406.

It can be written as a sum of positive squares in 4 ways, for example, as 18225 + 586756 = 135^2 + 766^2 .

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 604981 - 2³ = 604973 is a prime.

It is a super-2 number, since 2×604981² = 732004020722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (604931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2115 + ... + 2383.

It is an arithmetic number, because the mean of its divisors is an integer number (82215).

2⁶⁰⁴⁹⁸¹ is an apocalyptic number.

It is an amenable number.

604981 is a deficient number, since it is larger than the sum of its proper divisors (52739).

604981 is a wasteful number, since it uses less digits than its factorization.

604981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 604981 is about 777.8052455467. The cubic root of 604981 is about 84.5760201938.

It can be divided in two parts, 60 and 4981, that added together give a square (5041 = 71²).

The spelling of 604981 in words is "six hundred four thousand, nine hundred eighty-one".