205077013 has 4 divisors (see below), whose sum is σ = 215870560. Its totient is φ = 194283468.

The previous prime is 205077007. The next prime is 205077029. The reversal of 205077013 is 310770502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 205077013 - 2¹⁷ = 204945941 is a prime.

It is a super-2 number, since 2×205077013² = 84113162522004338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205077043) 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 3 ways as a sum of consecutive naturals, for example, 5396745 + ... + 5396782.

It is an arithmetic number, because the mean of its divisors is an integer number (53967640).

Almost surely, 2^205077013 is an apocalyptic number.

It is an amenable number.

205077013 is a deficient number, since it is larger than the sum of its proper divisors (10793547).

205077013 is a wasteful number, since it uses less digits than its factorization.

205077013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10793546.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 205077013 is about 14320.5102213573. The cubic root of 205077013 is about 589.7106816683.

The spelling of 205077013 in words is "two hundred five million, seventy-seven thousand, thirteen".