646701786003 has 96 divisors (see below), whose sum is σ = 1098336368640. Its totient is φ = 331269419520.

The previous prime is 646701785981. The next prime is 646701786079. The reversal of 646701786003 is 300687107646.

It is not a de Polignac number, because 646701786003 - 2¹⁴ = 646701769619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (646701786083) 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 95 ways as a sum of consecutive naturals, for example, 17083725 + ... + 17121537.

It is an arithmetic number, because the mean of its divisors is an integer number (11441003840).

Almost surely, 2^646701786003 is an apocalyptic number.

646701786003 is a deficient number, since it is larger than the sum of its proper divisors (451634582637).

646701786003 is a wasteful number, since it uses less digits than its factorization.

646701786003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37989 (or 37976 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 646701786003 in words is "six hundred forty-six billion, seven hundred one million, seven hundred eighty-six thousand, three".