497671897 has 4 divisors (see below), whose sum is σ = 497866420. Its totient is φ = 497477376.

The previous prime is 497671843. The next prime is 497671919. The reversal of 497671897 is 798176794.

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 399840016 + 97831881 = 19996^2 + 9891^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497671897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497671397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93372 + ... + 98557.

It is an arithmetic number, because the mean of its divisors is an integer number (124466605).

Almost surely, 2^497671897 is an apocalyptic number.

It is an amenable number.

497671897 is a deficient number, since it is larger than the sum of its proper divisors (194523).

497671897 is a wasteful number, since it uses less digits than its factorization.

497671897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194522.

The product of its digits is 5334336, while the sum is 58.

The square root of 497671897 is about 22308.5610696880. The cubic root of 497671897 is about 792.4667313470.

The spelling of 497671897 in words is "four hundred ninety-seven million, six hundred seventy-one thousand, eight hundred ninety-seven".