404066 has 8 divisors (see below), whose sum is σ = 652764. Its totient is φ = 186480.

The previous prime is 404051. The next prime is 404081. The reversal of 404066 is 660404.

It is an interprime number because it is at equal distance from previous prime (404051) and next prime (404081).

It can be written as a sum of positive squares in 2 ways, for example, as 403225 + 841 = 635^2 + 29^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

404066 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7745 + ... + 7796.

2⁴⁰⁴⁰⁶⁶ is an apocalyptic number.

404066 is a deficient number, since it is larger than the sum of its proper divisors (248698).

404066 is a wasteful number, since it uses less digits than its factorization.

404066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15556.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 404066 is about 635.6618597965. The cubic root of 404066 is about 73.9294433395.

The spelling of 404066 in words is "four hundred four thousand, sixty-six".