646633011 has 8 divisors (see below), whose sum is σ = 882228160. Its totient is φ = 421063272.

The previous prime is 646632989. The next prime is 646633021. The reversal of 646633011 is 110336646.

646633011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 646633011 - 2¹³ = 646624819 is a prime.

It is a super-2 number, since 2×646633011² = 836268501829852242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 646633011.

It is not an unprimeable number, because it can be changed into a prime (646633021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2506201 + ... + 2506458.

It is an arithmetic number, because the mean of its divisors is an integer number (110278520).

Almost surely, 2^646633011 is an apocalyptic number.

646633011 is a deficient number, since it is larger than the sum of its proper divisors (235595149).

646633011 is a wasteful number, since it uses less digits than its factorization.

646633011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5012705.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 646633011 is about 25428.9797475243. The cubic root of 646633011 is about 864.7408140119.

Adding to 646633011 its reverse (110336646), we get a palindrome (756969657).

The spelling of 646633011 in words is "six hundred forty-six million, six hundred thirty-three thousand, eleven".