649855011 has 8 divisors (see below), whose sum is σ = 933125200. Its totient is φ = 399910752.

The previous prime is 649854991. The next prime is 649855069. The reversal of 649855011 is 110558946.

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

It is not a de Polignac number, because 649855011 - 2⁷ = 649854883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 16662949 = 649855011 / (6 + 4 + 9 + 8 + 5 + 5 + 0 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649855091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8331436 + ... + 8331513.

It is an arithmetic number, because the mean of its divisors is an integer number (116640650).

Almost surely, 2^649855011 is an apocalyptic number.

649855011 is a deficient number, since it is larger than the sum of its proper divisors (283270189).

649855011 is a wasteful number, since it uses less digits than its factorization.

649855011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16662965.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 649855011 is about 25492.2539411485. The cubic root of 649855011 is about 866.1746927864.

It can be divided in two parts, 64985 and 5011, that added together give a palindrome (69996).

The spelling of 649855011 in words is "six hundred forty-nine million, eight hundred fifty-five thousand, eleven".