649008 has 30 divisors (see below), whose sum is σ = 1816724. Its totient is φ = 216288.

The previous prime is 649007. The next prime is 649039. The reversal of 649008 is 800946.

649008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×649008² = 842422768128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (649001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2110 + ... + 2397.

2⁶⁴⁹⁰⁰⁸ is an apocalyptic number.

It is an amenable number.

649008 is an abundant number, since it is smaller than the sum of its proper divisors (1167716).

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

649008 is a wasteful number, since it uses less digits than its factorization.

649008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4521 (or 4512 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 649008 is about 805.6103276399. The cubic root of 649008 is about 86.5798209592.

The spelling of 649008 in words is "six hundred forty-nine thousand, eight".