649507 has 2 divisors, whose sum is σ = 649508. Its totient is φ = 649506.

The previous prime is 649501. The next prime is 649511. The reversal of 649507 is 705946.

649507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 649507 - 2³ = 649499 is a prime.

It is a d-powerful number, because it can be written as 6² + 4⁴ + 5³ + 9⁶ + 0 + 7⁶ .

It is not a weakly prime, because it can be changed into another prime (649501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324753 + 324754.

It is an arithmetic number, because the mean of its divisors is an integer number (324754).

2⁶⁴⁹⁵⁰⁷ is an apocalyptic number.

649507 is a deficient number, since it is larger than the sum of its proper divisors (1).

649507 is an equidigital number, since it uses as much as digits as its factorization.

649507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 649507 is about 805.9199712130. The cubic root of 649507 is about 86.6020046934.

It can be divided in two parts, 649 and 507, that added together give a square (1156 = 34²).

The spelling of 649507 in words is "six hundred forty-nine thousand, five hundred seven".