497605865 has 4 divisors (see below), whose sum is σ = 597127044. Its totient is φ = 398084688.

The previous prime is 497605837. The next prime is 497605903. The reversal of 497605865 is 568506794.

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 63425296 + 434180569 = 7964^2 + 20837^2 .

It is a cyclic number.

It is not a de Polignac number, because 497605865 - 2¹⁴ = 497589481 is a prime.

It is a super-2 number, since 2×497605865² = 495223193764796450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49760582 + ... + 49760591.

It is an arithmetic number, because the mean of its divisors is an integer number (149281761).

Almost surely, 2^497605865 is an apocalyptic number.

It is an amenable number.

497605865 is a deficient number, since it is larger than the sum of its proper divisors (99521179).

497605865 is an equidigital number, since it uses as much as digits as its factorization.

497605865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99521178.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The square root of 497605865 is about 22307.0810506440. The cubic root of 497605865 is about 792.4316811609.

The spelling of 497605865 in words is "four hundred ninety-seven million, six hundred five thousand, eight hundred sixty-five".