664288357 has 2 divisors, whose sum is σ = 664288358. Its totient is φ = 664288356.

The previous prime is 664288337. The next prime is 664288363. The reversal of 664288357 is 753882466.

664288357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 655052836 + 9235521 = 25594^2 + 3039^2 .

It is a cyclic number.

It is not a de Polignac number, because 664288357 - 2¹⁵ = 664255589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 664288357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664288307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332144178 + 332144179.

It is an arithmetic number, because the mean of its divisors is an integer number (332144179).

Almost surely, 2^664288357 is an apocalyptic number.

It is an amenable number.

664288357 is a deficient number, since it is larger than the sum of its proper divisors (1).

664288357 is an equidigital number, since it uses as much as digits as its factorization.

664288357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 49.

The square root of 664288357 is about 25773.7920570490. The cubic root of 664288357 is about 872.5404045295.

The spelling of 664288357 in words is "six hundred sixty-four million, two hundred eighty-eight thousand, three hundred fifty-seven".