664753157 has 2 divisors, whose sum is σ = 664753158. Its totient is φ = 664753156.

The previous prime is 664753151. The next prime is 664753207. The reversal of 664753157 is 751357466.

664753157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 463368676 + 201384481 = 21526^2 + 14191^2 .

It is a cyclic number.

It is not a de Polignac number, because 664753157 - 2¹² = 664749061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664753151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332376578 + 332376579.

It is an arithmetic number, because the mean of its divisors is an integer number (332376579).

Almost surely, 2^664753157 is an apocalyptic number.

It is an amenable number.

664753157 is a deficient number, since it is larger than the sum of its proper divisors (1).

664753157 is an equidigital number, since it uses as much as digits as its factorization.

664753157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 529200, while the sum is 44.

The square root of 664753157 is about 25782.8073917485. The cubic root of 664753157 is about 872.7438614689.

The spelling of 664753157 in words is "six hundred sixty-four million, seven hundred fifty-three thousand, one hundred fifty-seven".