497738665 has 8 divisors (see below), whose sum is σ = 632421000. Its totient is φ = 374767872.

The previous prime is 497738651. The next prime is 497738707. The reversal of 497738665 is 566837794.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 267518736 + 230219929 = 16356^2 + 15173^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 497738665 - 2⁷ = 497738537 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 2927790 + ... + 2927959.

It is an arithmetic number, because the mean of its divisors is an integer number (79052625).

Almost surely, 2^497738665 is an apocalyptic number.

It is an amenable number.

497738665 is a deficient number, since it is larger than the sum of its proper divisors (134682335).

497738665 is a wasteful number, since it uses less digits than its factorization.

497738665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5855771.

The product of its digits is 7620480, while the sum is 55.

The square root of 497738665 is about 22310.0574853585. The cubic root of 497738665 is about 792.5021690540.

The spelling of 497738665 in words is "four hundred ninety-seven million, seven hundred thirty-eight thousand, six hundred sixty-five".