649464 has 16 divisors (see below), whose sum is σ = 1623720. Its totient is φ = 216480.

The previous prime is 649457. The next prime is 649469. The reversal of 649464 is 464946.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 649464.

It is not an unprimeable number, because it can be changed into a prime (649469) by changing a digit.

649464 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13507 + ... + 13554.

2⁶⁴⁹⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

649464 is an abundant number, since it is smaller than the sum of its proper divisors (974256).

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

649464 is a wasteful number, since it uses less digits than its factorization.

649464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27070 (or 27066 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 649464 is about 805.8932931846. The cubic root of 649464 is about 86.6000935165.

The spelling of 649464 in words is "six hundred forty-nine thousand, four hundred sixty-four".