494668689 has 16 divisors (see below), whose sum is σ = 698174400. Its totient is φ = 311000256.

The previous prime is 494668661. The next prime is 494668693. The reversal of 494668689 is 986866494.

It is not a de Polignac number, because 494668689 - 2⁹ = 494668177 is a prime.

It is a super-2 number, since 2×494668689² = 489394223753957442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (494661689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62374 + ... + 69855.

It is an arithmetic number, because the mean of its divisors is an integer number (43635900).

Almost surely, 2^494668689 is an apocalyptic number.

It is an amenable number.

494668689 is a deficient number, since it is larger than the sum of its proper divisors (203505711).

494668689 is a wasteful number, since it uses less digits than its factorization.

494668689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132304.

The product of its digits is 17915904, while the sum is 60.

The square root of 494668689 is about 22241.1485539754. The cubic root of 494668689 is about 790.8694636015.

The spelling of 494668689 in words is "four hundred ninety-four million, six hundred sixty-eight thousand, six hundred eighty-nine".