664041122 has 4 divisors (see below), whose sum is σ = 996061686. Its totient is φ = 332020560.

The previous prime is 664041113. The next prime is 664041137. The reversal of 664041122 is 221140466.

664041122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 585204481 + 78836641 = 24191^2 + 8879^2 .

It is a super-2 number, since 2×664041122² = 881901223414037768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 664041091 and 664041100.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166010279 + ... + 166010282.

Almost surely, 2^664041122 is an apocalyptic number.

664041122 is a deficient number, since it is larger than the sum of its proper divisors (332020564).

664041122 is a wasteful number, since it uses less digits than its factorization.

664041122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332020563.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 664041122 is about 25768.9953626446. The cubic root of 664041122 is about 872.4321436652.

Adding to 664041122 its reverse (221140466), we get a palindrome (885181588).

The spelling of 664041122 in words is "six hundred sixty-four million, forty-one thousand, one hundred twenty-two".