604661 has 2 divisors, whose sum is σ = 604662. Its totient is φ = 604660.

The previous prime is 604651. The next prime is 604697. The reversal of 604661 is 166406.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323761 + 280900 = 569^2 + 530^2 .

It is a cyclic number.

It is not a de Polignac number, because 604661 - 2¹⁴ = 588277 is a prime.

It is a super-2 number, since 2×604661² = 731229849842, which contains 22 as substring.

It is a Chen prime.

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 604661.

It is not a weakly prime, because it can be changed into another prime (604651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302330 + 302331.

It is an arithmetic number, because the mean of its divisors is an integer number (302331).

2⁶⁰⁴⁶⁶¹ is an apocalyptic number.

It is an amenable number.

604661 is a deficient number, since it is larger than the sum of its proper divisors (1).

604661 is an equidigital number, since it uses as much as digits as its factorization.

604661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 604661 is about 777.5995113167. The cubic root of 604661 is about 84.5611056209.

The spelling of 604661 in words is "six hundred four thousand, six hundred sixty-one".