649548 has 18 divisors (see below), whose sum is σ = 1642004. Its totient is φ = 216504.

The previous prime is 649541. The next prime is 649559. The reversal of 649548 is 845946.

649548 is a `hidden beast` number, since 649 + 5 + 4 + 8 = 666.

649548 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 18043 = 649548 / (6 + 4 + 9 + 5 + 4 + 8).

It is not an unprimeable number, because it can be changed into a prime (649541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8986 + ... + 9057.

2⁶⁴⁹⁵⁴⁸ is an apocalyptic number.

It is an amenable number.

649548 is an abundant number, since it is smaller than the sum of its proper divisors (992456).

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

649548 is a wasteful number, since it uses less digits than its factorization.

649548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18053 (or 18048 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 649548 is about 805.9454075804. The cubic root of 649548 is about 86.6038268999.

The spelling of 649548 in words is "six hundred forty-nine thousand, five hundred forty-eight".