205655461 has 8 divisors (see below), whose sum is σ = 228030048. Its totient is φ = 183894000.

The previous prime is 205655447. The next prime is 205655473. The reversal of 205655461 is 164556502.

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 205655461 - 2²¹ = 203558309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205655441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152575 + ... + 153916.

It is an arithmetic number, because the mean of its divisors is an integer number (28503756).

Almost surely, 2^205655461 is an apocalyptic number.

It is an amenable number.

205655461 is a deficient number, since it is larger than the sum of its proper divisors (22374587).

205655461 is a wasteful number, since it uses less digits than its factorization.

205655461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306563.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 205655461 is about 14340.6924867665. The cubic root of 205655461 is about 590.2646146170.

It can be divided in two parts, 205655 and 461, that added together give a square (206116 = 454²).

The spelling of 205655461 in words is "two hundred five million, six hundred fifty-five thousand, four hundred sixty-one".