205987413 has 16 divisors (see below), whose sum is σ = 280912896. Its totient is φ = 134225520.

The previous prime is 205987409. The next prime is 205987421. The reversal of 205987413 is 314789502.

205987413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205987413 - 2² = 205987409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205987513) 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, 22420 + ... + 30242.

It is an arithmetic number, because the mean of its divisors is an integer number (17557056).

Almost surely, 2^205987413 is an apocalyptic number.

It is an amenable number.

205987413 is a deficient number, since it is larger than the sum of its proper divisors (74925483).

205987413 is a wasteful number, since it uses less digits than its factorization.

205987413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8024.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 205987413 is about 14352.2615987864. The cubic root of 205987413 is about 590.5820293029.

The spelling of 205987413 in words is "two hundred five million, nine hundred eighty-seven thousand, four hundred thirteen".