649560 has 32 divisors (see below), whose sum is σ = 1949040. Its totient is φ = 173184.

The previous prime is 649559. The next prime is 649567. The reversal of 649560 is 65946.

649560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2587 + ... + 2826.

2⁶⁴⁹⁵⁶⁰ is an apocalyptic number.

649560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

649560 is an abundant number, since it is smaller than the sum of its proper divisors (1299480).

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

649560 is a wasteful number, since it uses less digits than its factorization.

649560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5427 (or 5423 counting only the distinct ones).

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

The square root of 649560 is about 805.9528522190. The cubic root of 649560 is about 86.6043602141.

It can be divided in two parts, 6495 and 60, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 649560 in words is "six hundred forty-nine thousand, five hundred sixty".