649452 has 12 divisors (see below), whose sum is σ = 1515416. Its totient is φ = 216480.

The previous prime is 649427. The next prime is 649457. The reversal of 649452 is 254946.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (649457) by changing a digit.

649452 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 27049 + ... + 27072.

2⁶⁴⁹⁴⁵² is an apocalyptic number.

It is an amenable number.

649452 is an abundant number, since it is smaller than the sum of its proper divisors (865964).

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

649452 is a wasteful number, since it uses less digits than its factorization.

649452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54128 (or 54126 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 649452 is about 805.8858479959. The cubic root of 649452 is about 86.5995601497.

The spelling of 649452 in words is "six hundred forty-nine thousand, four hundred fifty-two".