646575896 has 8 divisors (see below), whose sum is σ = 1212329820. Its totient is φ = 323287944.

The previous prime is 646575883. The next prime is 646575899. The reversal of 646575896 is 698575646.

It is a happy number.

646575896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646575899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40410986 + ... + 40411001.

Almost surely, 2^646575896 is an apocalyptic number.

It is an amenable number.

646575896 is a deficient number, since it is larger than the sum of its proper divisors (565753924).

646575896 is a wasteful number, since it uses less digits than its factorization.

646575896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80821993 (or 80821989 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 56.

The square root of 646575896 is about 25427.8566930050. The cubic root of 646575896 is about 864.7153533436.

The spelling of 646575896 in words is "six hundred forty-six million, five hundred seventy-five thousand, eight hundred ninety-six".