649535 has 8 divisors (see below), whose sum is σ = 800736. Its totient is φ = 505440.

The previous prime is 649529. The next prime is 649541. The reversal of 649535 is 535946.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (649529) and next prime (649541).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 649535 - 2⁶ = 649471 is a prime.

It is a Duffinian number.

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 649535.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1571 + ... + 1940.

It is an arithmetic number, because the mean of its divisors is an integer number (100092).

2⁶⁴⁹⁵³⁵ is an apocalyptic number.

649535 is a deficient number, since it is larger than the sum of its proper divisors (151201).

649535 is a wasteful number, since it uses less digits than its factorization.

649535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3553.

The product of its digits is 16200, while the sum is 32.

The square root of 649535 is about 805.9373424777. The cubic root of 649535 is about 86.6032491354.

The spelling of 649535 in words is "six hundred forty-nine thousand, five hundred thirty-five".