205214693 has 4 divisors (see below), whose sum is σ = 205402860. Its totient is φ = 205026528.

The previous prime is 205214689. The next prime is 205214707. The reversal of 205214693 is 396412502.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 396412502 = 2 ⋅198206251.

It can be written as a sum of positive squares in 2 ways, for example, as 69189124 + 136025569 = 8318^2 + 11663^2 .

It is a cyclic number.

It is not a de Polignac number, because 205214693 - 2² = 205214689 is a prime.

It is a super-2 number, since 2×205214693² = 84226140446168498, 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 (205214683) 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, 92438 + ... + 94631.

It is an arithmetic number, because the mean of its divisors is an integer number (51350715).

Almost surely, 2^205214693 is an apocalyptic number.

It is an amenable number.

205214693 is a deficient number, since it is larger than the sum of its proper divisors (188167).

205214693 is a wasteful number, since it uses less digits than its factorization.

205214693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188166.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 205214693 is about 14325.3165061021. The cubic root of 205214693 is about 589.8426210517.

The spelling of 205214693 in words is "two hundred five million, two hundred fourteen thousand, six hundred ninety-three".