649084 has 12 divisors (see below), whose sum is σ = 1142064. Its totient is φ = 322784.

The previous prime is 649081. The next prime is 649087. The reversal of 649084 is 480946.

It is an interprime number because it is at equal distance from previous prime (649081) and next prime (649087).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744 + ... + 1360.

It is an arithmetic number, because the mean of its divisors is an integer number (95172).

2⁶⁴⁹⁰⁸⁴ is an apocalyptic number.

It is an amenable number.

649084 is a deficient number, since it is larger than the sum of its proper divisors (492980).

649084 is a wasteful number, since it uses less digits than its factorization.

649084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 882 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 649084 is about 805.6574954657. The cubic root of 649084 is about 86.5832003781.

The spelling of 649084 in words is "six hundred forty-nine thousand, eighty-four".