664581417303 has 8 divisors (see below), whose sum is σ = 887234491648. Its totient is φ = 442491310584.

The previous prime is 664581417287. The next prime is 664581417317. The reversal of 664581417303 is 303714185466.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 664581417303 - 2⁴ = 664581417287 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 (664581317303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140739151 + ... + 140743872.

It is an arithmetic number, because the mean of its divisors is an integer number (110904311456).

Almost surely, 2^664581417303 is an apocalyptic number.

664581417303 is a deficient number, since it is larger than the sum of its proper divisors (222653074345).

664581417303 is a wasteful number, since it uses less digits than its factorization.

664581417303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281483813.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 664581417303 in words is "six hundred sixty-four billion, five hundred eighty-one million, four hundred seventeen thousand, three hundred three".