664126033 has 2 divisors, whose sum is σ = 664126034. Its totient is φ = 664126032.

The previous prime is 664126031. The next prime is 664126049. The reversal of 664126033 is 330621466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 587965504 + 76160529 = 24248^2 + 8727^2 .

It is a cyclic number.

It is not a de Polignac number, because 664126033 - 2¹ = 664126031 is a prime.

Together with 664126031, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 664125986 and 664126004.

It is not a weakly prime, because it can be changed into another prime (664126031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332063016 + 332063017.

It is an arithmetic number, because the mean of its divisors is an integer number (332063017).

Almost surely, 2^664126033 is an apocalyptic number.

It is an amenable number.

664126033 is a deficient number, since it is larger than the sum of its proper divisors (1).

664126033 is an equidigital number, since it uses as much as digits as its factorization.

664126033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 664126033 is about 25770.6428518964. The cubic root of 664126033 is about 872.4693280734.

Adding to 664126033 its reverse (330621466), we get a palindrome (994747499).

The spelling of 664126033 in words is "six hundred sixty-four million, one hundred twenty-six thousand, thirty-three".