649606 has 8 divisors (see below), whose sum is σ = 978120. Its totient is φ = 323568.

The previous prime is 649577. The next prime is 649613. The reversal of 649606 is 606946.

649606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330 + ... + 1186.

It is an arithmetic number, because the mean of its divisors is an integer number (122265).

2⁶⁴⁹⁶⁰⁶ is an apocalyptic number.

649606 is a deficient number, since it is larger than the sum of its proper divisors (328514).

649606 is a wasteful number, since it uses less digits than its factorization.

649606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 649606 is about 805.9813893633. The cubic root of 649606 is about 86.6064045243.

The spelling of 649606 in words is "six hundred forty-nine thousand, six hundred six".