649087 has 2 divisors, whose sum is σ = 649088. Its totient is φ = 649086.

The previous prime is 649081. The next prime is 649093. The reversal of 649087 is 780946.

It is a balanced prime because it is at equal distance from previous prime (649081) and next prime (649093).

It is a cyclic number.

It is not a de Polignac number, because 649087 - 2³ = 649079 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324543 + 324544.

It is an arithmetic number, because the mean of its divisors is an integer number (324544).

2⁶⁴⁹⁰⁸⁷ is an apocalyptic number.

649087 is a deficient number, since it is larger than the sum of its proper divisors (1).

649087 is an equidigital number, since it uses as much as digits as its factorization.

649087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 649087 is about 805.6593572969. The cubic root of 649087 is about 86.5833337708.

The spelling of 649087 in words is "six hundred forty-nine thousand, eighty-seven".