649120 has 24 divisors (see below), whose sum is σ = 1533924. Its totient is φ = 259584.

The previous prime is 649093. The next prime is 649123. The reversal of 649120 is 21946.

649120 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 646416 + 2704 = 804^2 + 52^2 .

It is a super-3 number, since 3×649120³ = 820533328195584000, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 649091 and 649100.

It is not an unprimeable number, because it can be changed into a prime (649123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1869 + ... + 2188.

2⁶⁴⁹¹²⁰ is an apocalyptic number.

It is an amenable number.

649120 is an abundant number, since it is smaller than the sum of its proper divisors (884804).

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

649120 is a wasteful number, since it uses less digits than its factorization.

649120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4072 (or 4064 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 649120 is about 805.6798371562. The cubic root of 649120 is about 86.5848010633.

The spelling of 649120 in words is "six hundred forty-nine thousand, one hundred twenty".