495665903 has 4 divisors (see below), whose sum is σ = 504067080. Its totient is φ = 487264728.

The previous prime is 495665897. The next prime is 495665909. The reversal of 495665903 is 309566594.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (495665897) and next prime (495665909).

It is a cyclic number.

It is not a de Polignac number, because 495665903 - 2¹⁰ = 495664879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495665909) by changing a digit.

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, 4200500 + ... + 4200617.

It is an arithmetic number, because the mean of its divisors is an integer number (126016770).

Almost surely, 2^495665903 is an apocalyptic number.

495665903 is a deficient number, since it is larger than the sum of its proper divisors (8401177).

495665903 is an equidigital number, since it uses as much as digits as its factorization.

495665903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8401176.

The product of its (nonzero) digits is 874800, while the sum is 47.

The square root of 495665903 is about 22263.5554887354. Note that the first 3 decimals coincide. The cubic root of 495665903 is about 791.4005508714.

The spelling of 495665903 in words is "four hundred ninety-five million, six hundred sixty-five thousand, nine hundred three".