64664003 has 2 divisors, whose sum is σ = 64664004. Its totient is φ = 64664002.

The previous prime is 64663993. The next prime is 64664021. The reversal of 64664003 is 30046646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64664003 - 2⁴ = 64663987 is a prime.

It is equal to p_3821924 and since 64664003 and 3821924 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (64864003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32332001 + 32332002.

It is an arithmetic number, because the mean of its divisors is an integer number (32332002).

Almost surely, 2^64664003 is an apocalyptic number.

64664003 is a deficient number, since it is larger than the sum of its proper divisors (1).

64664003 is an equidigital number, since it uses as much as digits as its factorization.

64664003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 64664003 is about 8041.3931007009. The cubic root of 64664003 is about 401.3785828980.

The spelling of 64664003 in words is "sixty-four million, six hundred sixty-four thousand, three".