497681 has 4 divisors (see below), whose sum is σ = 499200. Its totient is φ = 496164.

The previous prime is 497677. The next prime is 497689. The reversal of 497681 is 186794.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 497681 - 2² = 497677 is a prime.

It is a super-2 number, since 2×497681² = 495372755522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41 + ... + 998.

It is an arithmetic number, because the mean of its divisors is an integer number (124800).

2⁴⁹⁷⁶⁸¹ is an apocalyptic number.

It is an amenable number.

497681 is a deficient number, since it is larger than the sum of its proper divisors (1519).

497681 is a wasteful number, since it uses less digits than its factorization.

497681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518.

The product of its digits is 12096, while the sum is 35.

The square root of 497681 is about 705.4650948133. The cubic root of 497681 is about 79.2471563031.

The spelling of 497681 in words is "four hundred ninety-seven thousand, six hundred eighty-one".