64867503683 has 4 divisors (see below), whose sum is σ = 64933899240. Its totient is φ = 64801108128.

The previous prime is 64867503661. The next prime is 64867503703. The reversal of 64867503683 is 38630576846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38630576846 = 2 ⋅19315288423.

It is a cyclic number.

It is not a de Polignac number, because 64867503683 - 2¹⁸ = 64867241539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64867503643) 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 3 ways as a sum of consecutive naturals, for example, 33196313 + ... + 33198266.

It is an arithmetic number, because the mean of its divisors is an integer number (16233474810).

Almost surely, 2^64867503683 is an apocalyptic number.

64867503683 is a deficient number, since it is larger than the sum of its proper divisors (66395557).

64867503683 is an equidigital number, since it uses as much as digits as its factorization.

64867503683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66395556.

The product of its (nonzero) digits is 17418240, while the sum is 56.

The spelling of 64867503683 in words is "sixty-four billion, eight hundred sixty-seven million, five hundred three thousand, six hundred eighty-three".