646305036366 has 32 divisors (see below), whose sum is σ = 1424081678976. Its totient is φ = 193910900000.

The previous prime is 646305036359. The next prime is 646305036367. The reversal of 646305036366 is 663630503646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646305036367) 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 15 ways as a sum of consecutive naturals, for example, 48471060 + ... + 48484391.

It is an arithmetic number, because the mean of its divisors is an integer number (44502552468).

Almost surely, 2^646305036366 is an apocalyptic number.

646305036366 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

646305036366 is an abundant number, since it is smaller than the sum of its proper divisors (777776642610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646305036366 is a wasteful number, since it uses less digits than its factorization.

646305036366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96955568.

The product of its (nonzero) digits is 4199040, while the sum is 48.

The spelling of 646305036366 in words is "six hundred forty-six billion, three hundred five million, thirty-six thousand, three hundred sixty-six".