505697 has 4 divisors (see below), whose sum is σ = 509076.
Its totient is φ = 502320.
The previous prime is 505693. The next prime is 505709. The reversal of 505697 is 796505.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 271441 + 234256 = 521^2 + 484^2
It is a cyclic number.
It is not a de Polignac number, because 505697 - 22 = 505693 is a prime.
It is a Duffinian number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 505697.
It is not an unprimeable number, because it can be changed into a prime (505691) 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, 1454 + ... + 1767.
It is an arithmetic number, because the mean of its divisors is an integer number (127269).
2505697 is an apocalyptic number.
It is an amenable number.
505697 is a deficient number, since it is larger than the sum of its proper divisors (3379).
505697 is a wasteful number, since it uses less digits than its factorization.
505697 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3378.
The product of its (nonzero) digits is 9450, while the sum is 32.
The square root of 505697 is about 711.1237585681.
The cubic root of 505697 is about 79.6703623533.
The spelling of 505697 in words is "five hundred five thousand, six hundred ninety-seven".