649608 has 16 divisors (see below), whose sum is σ = 1624080. Its totient is φ = 216528.

The previous prime is 649577. The next prime is 649613. The reversal of 649608 is 806946.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 649608.

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, 13510 + ... + 13557.

It is an arithmetic number, because the mean of its divisors is an integer number (101505).

2⁶⁴⁹⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

649608 is an abundant number, since it is smaller than the sum of its proper divisors (974472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649608 is a wasteful number, since it uses less digits than its factorization.

649608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27076 (or 27072 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 649608 is about 805.9826300858. The cubic root of 649608 is about 86.6064934052.

The spelling of 649608 in words is "six hundred forty-nine thousand, six hundred eight".