646450041 has 16 divisors (see below), whose sum is σ = 913296384. Its totient is φ = 405321984.

The previous prime is 646450039. The next prime is 646450093. The reversal of 646450041 is 140054646.

It is not a de Polignac number, because 646450041 - 2¹ = 646450039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 646449990 and 646450008.

It is not an unprimeable number, because it can be changed into a prime (646450031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82600 + ... + 90086.

It is an arithmetic number, because the mean of its divisors is an integer number (57081024).

Almost surely, 2^646450041 is an apocalyptic number.

It is an amenable number.

646450041 is a deficient number, since it is larger than the sum of its proper divisors (266846343).

646450041 is a wasteful number, since it uses less digits than its factorization.

646450041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9200.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 646450041 is about 25425.3818260415. The cubic root of 646450041 is about 864.6592445334.

The spelling of 646450041 in words is "six hundred forty-six million, four hundred fifty thousand, forty-one".