649896 has 32 divisors (see below), whose sum is σ = 1750560. Its totient is φ = 199872.

The previous prime is 649879. The next prime is 649897. The reversal of 649896 is 698946.

649896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (649897) by changing a digit.

649896 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730 + ... + 1353.

It is an arithmetic number, because the mean of its divisors is an integer number (54705).

2⁶⁴⁹⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

649896 is an abundant number, since it is smaller than the sum of its proper divisors (1100664).

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

649896 is a wasteful number, since it uses less digits than its factorization.

649896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105 (or 2101 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 649896 is about 806.1612741877. The cubic root of 649896 is about 86.6192903458.

The spelling of 649896 in words is "six hundred forty-nine thousand, eight hundred ninety-six".