497664369 has 6 divisors (see below), whose sum is σ = 718848546. Its totient is φ = 331776240.

The previous prime is 497664353. The next prime is 497664407. The reversal of 497664369 is 963466794.

It can be written as a sum of positive squares in only one way, i.e., 490046769 + 7617600 = 22137^2 + 2760^2 .

It is not a de Polignac number, because 497664369 - 2⁴ = 497664353 is a prime.

It is a super-2 number, since 2×497664369² = 495339648344336322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (497666369) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27648012 + ... + 27648029.

It is an arithmetic number, because the mean of its divisors is an integer number (119808091).

Almost surely, 2^497664369 is an apocalyptic number.

It is an amenable number.

497664369 is a deficient number, since it is larger than the sum of its proper divisors (221184177).

497664369 is a wasteful number, since it uses less digits than its factorization.

497664369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55296047 (or 55296044 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 54.

The square root of 497664369 is about 22308.3923445864. The cubic root of 497664369 is about 792.4627355955.

The spelling of 497664369 in words is "four hundred ninety-seven million, six hundred sixty-four thousand, three hundred sixty-nine".