497209681 has 8 divisors (see below), whose sum is σ = 503465984. Its totient is φ = 490976640.

The previous prime is 497209667. The next prime is 497209709. The reversal of 497209681 is 186902794.

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 497209681 - 2¹⁵ = 497176913 is a prime.

It is a super-2 number, since 2×497209681² = 494434933760243522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497209621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39376 + ... + 50446.

It is an arithmetic number, because the mean of its divisors is an integer number (62933248).

Almost surely, 2^497209681 is an apocalyptic number.

It is an amenable number.

497209681 is a deficient number, since it is larger than the sum of its proper divisors (6256303).

497209681 is a wasteful number, since it uses less digits than its factorization.

497209681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11631.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 497209681 is about 22298.1990528383. The cubic root of 497209681 is about 792.2213191509.

The spelling of 497209681 in words is "four hundred ninety-seven million, two hundred nine thousand, six hundred eighty-one".