494252666 has 16 divisors (see below), whose sum is σ = 757831464. Its totient is φ = 241672704.

The previous prime is 494252659. The next prime is 494252669. The reversal of 494252666 is 666252494.

It can be written as a sum of positive squares in 4 ways, for example, as 429691441 + 64561225 = 20729^2 + 8035^2 .

It is not an unprimeable number, because it can be changed into a prime (494252669) 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, 25730 + ... + 40626.

Almost surely, 2^494252666 is an apocalyptic number.

494252666 is a deficient number, since it is larger than the sum of its proper divisors (263578798).

494252666 is a wasteful number, since it uses less digits than its factorization.

494252666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15265.

The product of its digits is 622080, while the sum is 44.

The square root of 494252666 is about 22231.7940346703. The cubic root of 494252666 is about 790.6476908109.

The spelling of 494252666 in words is "four hundred ninety-four million, two hundred fifty-two thousand, six hundred sixty-six".