604601561 has 16 divisors (see below), whose sum is σ = 631031040. Its totient is φ = 578849280.

The previous prime is 604601551. The next prime is 604601573. The reversal of 604601561 is 165106406.

It is a cyclic number.

It is not a de Polignac number, because 604601561 - 2¹⁰ = 604600537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (604601531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 650345 + ... + 651273.

It is an arithmetic number, because the mean of its divisors is an integer number (39439440).

Almost surely, 2^604601561 is an apocalyptic number.

604601561 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

604601561 is a deficient number, since it is larger than the sum of its proper divisors (26429479).

604601561 is a wasteful number, since it uses less digits than its factorization.

604601561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 604601561 is about 24588.6469940906. The cubic root of 604601561 is about 845.5833470615.

Adding to 604601561 its reverse (165106406), we get a palindrome (769707967).

The spelling of 604601561 in words is "six hundred four million, six hundred one thousand, five hundred sixty-one".