505965693 has 4 divisors (see below), whose sum is σ = 674620928. Its totient is φ = 337310460.

The previous prime is 505965689. The next prime is 505965731. The reversal of 505965693 is 396569505.

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 not a de Polignac number, because 505965693 - 2² = 505965689 is a prime.

It is a super-3 number, since 3×505965693³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505965793) 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, 84327613 + ... + 84327618.

It is an arithmetic number, because the mean of its divisors is an integer number (168655232).

Almost surely, 2^505965693 is an apocalyptic number.

It is an amenable number.

505965693 is a deficient number, since it is larger than the sum of its proper divisors (168655235).

505965693 is a wasteful number, since it uses less digits than its factorization.

505965693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168655234.

The product of its (nonzero) digits is 1093500, while the sum is 48.

The square root of 505965693 is about 22493.6811793890. The cubic root of 505965693 is about 796.8447032603.

The spelling of 505965693 in words is "five hundred five million, nine hundred sixty-five thousand, six hundred ninety-three".