664000412 has 12 divisors (see below), whose sum is σ = 1190342496. Its totient is φ = 323902560.

The previous prime is 664000411. The next prime is 664000459. The reversal of 664000412 is 214000466.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664000411) 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, 2024228 + ... + 2024555.

It is an arithmetic number, because the mean of its divisors is an integer number (99195208).

Almost surely, 2^664000412 is an apocalyptic number.

It is an amenable number.

664000412 is a deficient number, since it is larger than the sum of its proper divisors (526342084).

664000412 is a wasteful number, since it uses less digits than its factorization.

664000412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4048828 (or 4048826 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 664000412 is about 25768.2054477994. The cubic root of 664000412 is about 872.4143147300.

Adding to 664000412 its reverse (214000466), we get a palindrome (878000878).

The spelling of 664000412 in words is "six hundred sixty-four million, four hundred twelve", and thus it is an aban number.