646000302263 has 4 divisors (see below), whose sum is σ = 648384067488. Its totient is φ = 643616537040.

The previous prime is 646000302223. The next prime is 646000302293. The reversal of 646000302263 is 362203000646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 362203000646 = 2 ⋅181101500323.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-646000302263 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 (646000302223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1191882206 + ... + 1191882747.

It is an arithmetic number, because the mean of its divisors is an integer number (162096016872).

Almost surely, 2^646000302263 is an apocalyptic number.

646000302263 is a deficient number, since it is larger than the sum of its proper divisors (2383765225).

646000302263 is a wasteful number, since it uses less digits than its factorization.

646000302263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383765224.

The product of its (nonzero) digits is 31104, while the sum is 32.

The spelling of 646000302263 in words is "six hundred forty-six billion, three hundred two thousand, two hundred sixty-three".