649064 has 24 divisors (see below), whose sum is σ = 1327410. Its totient is φ = 295776.

The previous prime is 649063. The next prime is 649069. The reversal of 649064 is 460946.

It can be written as a sum of positive squares in only one way, i.e., 624100 + 24964 = 790^2 + 158^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 649064.

It is not an unprimeable number, because it can be changed into a prime (649063) 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 5 ways as a sum of consecutive naturals, for example, 8177 + ... + 8255.

2⁶⁴⁹⁰⁶⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663705).

649064 is an abundant number, since it is smaller than the sum of its proper divisors (678346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649064 is a wasteful number, since it uses less digits than its factorization.

649064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 649064 is about 805.6450831477. The cubic root of 649064 is about 86.5823110829.

The spelling of 649064 in words is "six hundred forty-nine thousand, sixty-four".