205604315 has 16 divisors (see below), whose sum is σ = 282700992. Its totient is φ = 140621184.

The previous prime is 205604303. The next prime is 205604317. The reversal of 205604315 is 513406502.

It is a cyclic number.

It is not a de Polignac number, because 205604315 - 2¹⁶ = 205538779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205604317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6497 + ... + 21293.

It is an arithmetic number, because the mean of its divisors is an integer number (17668812).

Almost surely, 2^205604315 is an apocalyptic number.

205604315 is a deficient number, since it is larger than the sum of its proper divisors (77096677).

205604315 is a wasteful number, since it uses less digits than its factorization.

205604315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15206.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 205604315 is about 14338.9091286611. The cubic root of 205604315 is about 590.2156781143.

The spelling of 205604315 in words is "two hundred five million, six hundred four thousand, three hundred fifteen".