649494 has 12 divisors (see below), whose sum is σ = 1407276. Its totient is φ = 216492.

The previous prime is 649487. The next prime is 649499. The reversal of 649494 is 494946.

649494 is a `hidden beast` number, since 649 + 4 + 9 + 4 = 666.

649494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649499) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18024 + ... + 18059.

It is an arithmetic number, because the mean of its divisors is an integer number (117273).

2⁶⁴⁹⁴⁹⁴ is an apocalyptic number.

649494 is an abundant number, since it is smaller than the sum of its proper divisors (757782).

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

649494 is a wasteful number, since it uses less digits than its factorization.

649494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36091 (or 36088 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 649494 is about 805.9119058557. The cubic root of 649494 is about 86.6014269046.

The spelling of 649494 in words is "six hundred forty-nine thousand, four hundred ninety-four".