604891 has 4 divisors (see below), whose sum is σ = 691312. Its totient is φ = 518472.

The previous prime is 604883. The next prime is 604907. The reversal of 604891 is 198406.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 604891 - 2³ = 604883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (604801) 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, 43200 + ... + 43213.

It is an arithmetic number, because the mean of its divisors is an integer number (172828).

2⁶⁰⁴⁸⁹¹ is an apocalyptic number.

604891 is a deficient number, since it is larger than the sum of its proper divisors (86421).

604891 is an equidigital number, since it uses as much as digits as its factorization.

604891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86420.

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

The square root of 604891 is about 777.7473882952. The cubic root of 604891 is about 84.5718260019.

The spelling of 604891 in words is "six hundred four thousand, eight hundred ninety-one".