205345463 has 4 divisors (see below), whose sum is σ = 206227008. Its totient is φ = 204463920.

The previous prime is 205345453. The next prime is 205345477. The reversal of 205345463 is 364543502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 364543502 = 2 ⋅182271751.

It is a cyclic number.

It is not a de Polignac number, because 205345463 - 2⁴ = 205345447 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 (205345453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440423 + ... + 440888.

It is an arithmetic number, because the mean of its divisors is an integer number (51556752).

Almost surely, 2^205345463 is an apocalyptic number.

205345463 is a deficient number, since it is larger than the sum of its proper divisors (881545).

205345463 is an equidigital number, since it uses as much as digits as its factorization.

205345463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881544.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 205345463 is about 14329.8800762602. The cubic root of 205345463 is about 589.9678839169.

Adding to 205345463 its reverse (364543502), we get a palindrome (569888965).

The spelling of 205345463 in words is "two hundred five million, three hundred forty-five thousand, four hundred sixty-three".