649332 has 36 divisors (see below), whose sum is σ = 1739556. Its totient is φ = 203520.

The previous prime is 649321. The next prime is 649361. The reversal of 649332 is 233946.

649332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 467856 + 181476 = 684^2 + 426^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 649296 and 649305.

It is a congruent number.

It is an unprimeable number.

649332 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82 + ... + 1142.

It is an arithmetic number, because the mean of its divisors is an integer number (48321).

2⁶⁴⁹³³² 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 649332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (869778).

649332 is an abundant number, since it is smaller than the sum of its proper divisors (1090224).

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

649332 is a wasteful number, since it uses less digits than its factorization.

649332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 1083 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 649332 is about 805.8113923245. The cubic root of 649332 is about 86.5942261208.

The spelling of 649332 in words is "six hundred forty-nine thousand, three hundred thirty-two".