649056 has 24 divisors (see below), whose sum is σ = 1704024. Its totient is φ = 216320.

The previous prime is 649039. The next prime is 649063. The reversal of 649056 is 650946.

649056 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 (24).

It is a super-2 number, since 2×649056² = 842547382272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3285 + ... + 3476.

It is an arithmetic number, because the mean of its divisors is an integer number (71001).

2⁶⁴⁹⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

649056 is an abundant number, since it is smaller than the sum of its proper divisors (1054968).

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

649056 is a wasteful number, since it uses less digits than its factorization.

649056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774 (or 6766 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 649056 is about 805.6401181669. The cubic root of 649056 is about 86.5819553597.

The spelling of 649056 in words is "six hundred forty-nine thousand, fifty-six".