646650033 has 8 divisors (see below), whose sum is σ = 891931200. Its totient is φ = 416234448.

The previous prime is 646650007. The next prime is 646650041. The reversal of 646650033 is 330056646.

It is a happy number.

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

It is not a de Polignac number, because 646650033 - 2¹⁴ = 646633649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 646649976 and 646650003.

It is not an unprimeable number, because it can be changed into a prime (646650533) 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 7 ways as a sum of consecutive naturals, for example, 3716293 + ... + 3716466.

It is an arithmetic number, because the mean of its divisors is an integer number (111491400).

Almost surely, 2^646650033 is an apocalyptic number.

It is an amenable number.

646650033 is a deficient number, since it is larger than the sum of its proper divisors (245281167).

646650033 is a wasteful number, since it uses less digits than its factorization.

646650033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7432791.

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 646650033 is about 25429.3144421945. The cubic root of 646650033 is about 864.7484017722.

The spelling of 646650033 in words is "six hundred forty-six million, six hundred fifty thousand, thirty-three".