664729803 has 12 divisors (see below), whose sum is σ = 960829480. Its totient is φ = 442846656.

The previous prime is 664729787. The next prime is 664729817. The reversal of 664729803 is 308927466.

It is not a de Polignac number, because 664729803 - 2⁴ = 664729787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664729603) 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 11 ways as a sum of consecutive naturals, for example, 11401 + ... + 38202.

Almost surely, 2^664729803 is an apocalyptic number.

664729803 is a deficient number, since it is larger than the sum of its proper divisors (296099677).

664729803 is a wasteful number, since it uses less digits than its factorization.

664729803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51098 (or 51095 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 664729803 is about 25782.3544890687. The cubic root of 664729803 is about 872.7336409840.

The spelling of 664729803 in words is "six hundred sixty-four million, seven hundred twenty-nine thousand, eight hundred three".