604505561 has 8 divisors (see below), whose sum is σ = 659973504. Its totient is φ = 549123120.

The previous prime is 604505521. The next prime is 604505569. The reversal of 604505561 is 165505406.

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 604505561 - 2¹⁸ = 604243417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (604505569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6110 + ... + 35303.

It is an arithmetic number, because the mean of its divisors is an integer number (82496688).

Almost surely, 2^604505561 is an apocalyptic number.

It is an amenable number.

604505561 is a deficient number, since it is larger than the sum of its proper divisors (55467943).

604505561 is a wasteful number, since it uses less digits than its factorization.

604505561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42751.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 604505561 is about 24586.6947961697. The cubic root of 604505561 is about 845.5385901486.

The spelling of 604505561 in words is "six hundred four million, five hundred five thousand, five hundred sixty-one".