649260 has 36 divisors (see below), whose sum is σ = 1969968. Its totient is φ = 173088.

The previous prime is 649217. The next prime is 649261. The reversal of 649260 is 62946.

It is a tau number, because it is divible by the number of its divisors (36).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 649260.

It is not an unprimeable number, because it can be changed into a prime (649261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1624 + ... + 1983.

2⁶⁴⁹²⁶⁰ is an apocalyptic number.

649260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

649260 is an abundant number, since it is smaller than the sum of its proper divisors (1320708).

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

649260 is a wasteful number, since it uses less digits than its factorization.

649260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622 (or 3617 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 649260 is about 805.7667156194. The cubic root of 649260 is about 86.5910253880.

It can be divided in two parts, 649 and 260, that added together give a palindrome (909).

The spelling of 649260 in words is "six hundred forty-nine thousand, two hundred sixty".