664411 has 18 divisors (see below), whose sum is σ = 816620. Its totient is φ = 538560.

The previous prime is 664403. The next prime is 664421. The reversal of 664411 is 114466.

664411 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 664411 - 2³ = 664403 is a prime.

664411 is a lucky number.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (664421) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 34960 + ... + 34978.

2⁶⁶⁴⁴¹¹ is an apocalyptic number.

664411 is a deficient number, since it is larger than the sum of its proper divisors (152209).

664411 is a wasteful number, since it uses less digits than its factorization.

664411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 47 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 664411 is about 815.1141024421. The cubic root of 664411 is about 87.2594098274.

Adding to 664411 its reverse (114466), we get a palindrome (778877).

Subtracting from 664411 its reverse (114466), we obtain a palindrome (549945).

The spelling of 664411 in words is "six hundred sixty-four thousand, four hundred eleven".