646963363 has 4 divisors (see below), whose sum is σ = 649864768. Its totient is φ = 644061960.

The previous prime is 646963351. The next prime is 646963391. The reversal of 646963363 is 363369646.

646963363 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 646963363 - 2²⁵ = 613408931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646963063) 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, 1450368 + ... + 1450813.

It is an arithmetic number, because the mean of its divisors is an integer number (162466192).

Almost surely, 2^646963363 is an apocalyptic number.

646963363 is a deficient number, since it is larger than the sum of its proper divisors (2901405).

646963363 is a wasteful number, since it uses less digits than its factorization.

646963363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2901404.

The product of its digits is 1259712, while the sum is 46.

The square root of 646963363 is about 25435.4744992107. The cubic root of 646963363 is about 864.8880485941. Note that the first 3 decimals are identical.

The spelling of 646963363 in words is "six hundred forty-six million, nine hundred sixty-three thousand, three hundred sixty-three".