649008211 has 4 divisors (see below), whose sum is σ = 650002752. Its totient is φ = 648013672.

The previous prime is 649008169. The next prime is 649008221. The reversal of 649008211 is 112800946.

It is a happy number.

649008211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 649008211 - 2¹⁷ = 648877139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649008221) 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, 496291 + ... + 497596.

It is an arithmetic number, because the mean of its divisors is an integer number (162500688).

Almost surely, 2^649008211 is an apocalyptic number.

649008211 is a deficient number, since it is larger than the sum of its proper divisors (994541).

649008211 is an equidigital number, since it uses as much as digits as its factorization.

649008211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994540.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 649008211 is about 25475.6395601759. The cubic root of 649008211 is about 865.7983034194.

The spelling of 649008211 in words is "six hundred forty-nine million, eight thousand, two hundred eleven".