646013753 has 32 divisors (see below), whose sum is σ = 873669888. Its totient is φ = 462182400.

The previous prime is 646013701. The next prime is 646013777. The reversal of 646013753 is 357310646.

It is not a de Polignac number, because 646013753 - 2⁸ = 646013497 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (646013783) 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 31 ways as a sum of consecutive naturals, for example, 47651 + ... + 59687.

It is an arithmetic number, because the mean of its divisors is an integer number (27302184).

Almost surely, 2^646013753 is an apocalyptic number.

It is an amenable number.

646013753 is a deficient number, since it is larger than the sum of its proper divisors (227656135).

646013753 is a wasteful number, since it uses less digits than its factorization.

646013753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12113.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 646013753 is about 25416.8006051116. The cubic root of 646013753 is about 864.4646817538.

The spelling of 646013753 in words is "six hundred forty-six million, thirteen thousand, seven hundred fifty-three".