646753466 has 8 divisors (see below), whose sum is σ = 978715764. Its totient is φ = 320514880.

The previous prime is 646753463. The next prime is 646753489. The reversal of 646753466 is 664357646.

646753466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 633277225 + 13476241 = 25165^2 + 3671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 646753466.

It is not an unprimeable number, because it can be changed into a prime (646753463) 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, 1430645 + ... + 1431096.

Almost surely, 2^646753466 is an apocalyptic number.

646753466 is a deficient number, since it is larger than the sum of its proper divisors (331962298).

646753466 is a wasteful number, since it uses less digits than its factorization.

646753466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861856.

The product of its digits is 2177280, while the sum is 47.

The square root of 646753466 is about 25431.3480963947. The cubic root of 646753466 is about 864.7945054081.

The spelling of 646753466 in words is "six hundred forty-six million, seven hundred fifty-three thousand, four hundred sixty-six".