649740846 has 16 divisors (see below), whose sum is σ = 1355981184. Its totient is φ = 207163704.

The previous prime is 649740841. The next prime is 649740857. The reversal of 649740846 is 648047946.

It is a junction number, because it is equal to n+sod(n) for n = 649740795 and 649740804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649740841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2353996 + ... + 2354271.

It is an arithmetic number, because the mean of its divisors is an integer number (84748824).

Almost surely, 2^649740846 is an apocalyptic number.

649740846 is an abundant number, since it is smaller than the sum of its proper divisors (706240338).

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

649740846 is a wasteful number, since it uses less digits than its factorization.

649740846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708295.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The square root of 649740846 is about 25490.0146331853. The cubic root of 649740846 is about 866.1239673049.

The spelling of 649740846 in words is "six hundred forty-nine million, seven hundred forty thousand, eight hundred forty-six".