664484763 has 16 divisors (see below), whose sum is σ = 950952096. Its totient is φ = 411217920.

The previous prime is 664484753. The next prime is 664484833. The reversal of 664484763 is 367484466.

It is not a de Polignac number, because 664484763 - 2⁶ = 664484699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664484753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85518 + ... + 92963.

It is an arithmetic number, because the mean of its divisors is an integer number (59434506).

Almost surely, 2^664484763 is an apocalyptic number.

664484763 is a deficient number, since it is larger than the sum of its proper divisors (286467333).

664484763 is a wasteful number, since it uses less digits than its factorization.

664484763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178574.

The product of its digits is 2322432, while the sum is 48.

The square root of 664484763 is about 25777.6019637204. The cubic root of 664484763 is about 872.6263889177.

The spelling of 664484763 in words is "six hundred sixty-four million, four hundred eighty-four thousand, seven hundred sixty-three".