664264351 has 2 divisors, whose sum is σ = 664264352. Its totient is φ = 664264350.

The previous prime is 664264333. The next prime is 664264361. The reversal of 664264351 is 153462466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664264351 - 2²³ = 655875743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 664264351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664264361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332132175 + 332132176.

It is an arithmetic number, because the mean of its divisors is an integer number (332132176).

Almost surely, 2^664264351 is an apocalyptic number.

664264351 is a deficient number, since it is larger than the sum of its proper divisors (1).

664264351 is an equidigital number, since it uses as much as digits as its factorization.

664264351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 37.

The square root of 664264351 is about 25773.3263472141. The cubic root of 664264351 is about 872.5298938042.

The spelling of 664264351 in words is "six hundred sixty-four million, two hundred sixty-four thousand, three hundred fifty-one".