494681 has 4 divisors (see below), whose sum is σ = 539664. Its totient is φ = 449700.

The previous prime is 494677. The next prime is 494687. The reversal of 494681 is 186494.

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 494681 - 2² = 494677 is a prime.

It is a super-2 number, since 2×494681² = 489418583522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494687) 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, 22475 + ... + 22496.

It is an arithmetic number, because the mean of its divisors is an integer number (134916).

2⁴⁹⁴⁶⁸¹ is an apocalyptic number.

It is an amenable number.

494681 is a deficient number, since it is larger than the sum of its proper divisors (44983).

494681 is a wasteful number, since it uses less digits than its factorization.

494681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44982.

The product of its digits is 6912, while the sum is 32.

The square root of 494681 is about 703.3356240089. The cubic root of 494681 is about 79.0876024433.

The spelling of 494681 in words is "four hundred ninety-four thousand, six hundred eighty-one".