64631303 has 12 divisors (see below), whose sum is σ = 71235864. Its totient is φ = 58594800.

The previous prime is 64631233. The next prime is 64631309. The reversal of 64631303 is 30313646.

64631303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64631303 - 2¹² = 64627207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64631309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83225 + ... + 83997.

It is an arithmetic number, because the mean of its divisors is an integer number (5936322).

Almost surely, 2^64631303 is an apocalyptic number.

64631303 is a deficient number, since it is larger than the sum of its proper divisors (6604561).

64631303 is a wasteful number, since it uses less digits than its factorization.

64631303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486 (or 1475 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 64631303 is about 8039.3596138001. The cubic root of 64631303 is about 401.3109136535.

Adding to 64631303 its reverse (30313646), we get a palindrome (94944949).

The spelling of 64631303 in words is "sixty-four million, six hundred thirty-one thousand, three hundred three".