497557636 has 27 divisors (see below), whose sum is σ = 920533719. Its totient is φ = 235283688.

The previous prime is 497557631. The next prime is 497557639. The reversal of 497557636 is 636755794.

It is a happy number.

The square root of 497557636 is 22306.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×497557636² = 495127202283816992, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497557631) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 847335 + ... + 847921.

Almost surely, 2^497557636 is an apocalyptic number.

497557636 is the 22306-th square number.

It is an amenable number.

497557636 is a deficient number, since it is larger than the sum of its proper divisors (422976083).

497557636 is an equidigital number, since it uses as much as digits as its factorization.

497557636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216 (or 608 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 52.

The cubic root of 497557636 is about 792.4060789558.

The spelling of 497557636 in words is "four hundred ninety-seven million, five hundred fifty-seven thousand, six hundred thirty-six".