649011 has 16 divisors (see below), whose sum is σ = 960768. Its totient is φ = 386400.

The previous prime is 649007. The next prime is 649039. The reversal of 649011 is 110946.

649011 = T₃₃₈ + T₃₃₉ + ... + T₃₄₈.

649011 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 649011 - 2² = 649007 is a prime.

649011 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2205 + ... + 2481.

It is an arithmetic number, because the mean of its divisors is an integer number (60048).

2⁶⁴⁹⁰¹¹ is an apocalyptic number.

649011 is a deficient number, since it is larger than the sum of its proper divisors (311757).

649011 is a wasteful number, since it uses less digits than its factorization.

649011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 649011 is about 805.6121895801. The cubic root of 649011 is about 86.5799543624.

Adding to 649011 its reverse (110946), we get a palindrome (759957).

The spelling of 649011 in words is "six hundred forty-nine thousand, eleven".