649861010 has 32 divisors (see below), whose sum is σ = 1200483072. Its totient is φ = 253169280.

The previous prime is 649860983. The next prime is 649861013. The reversal of 649861010 is 10168946.

649861010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (649861013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95894 + ... + 102446.

It is an arithmetic number, because the mean of its divisors is an integer number (37515096).

Almost surely, 2^649861010 is an apocalyptic number.

649861010 is a deficient number, since it is larger than the sum of its proper divisors (550622062).

649861010 is a wasteful number, since it uses less digits than its factorization.

649861010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6818.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 649861010 is about 25492.3716040701. The cubic root of 649861010 is about 866.1773580815.

The spelling of 649861010 in words is "six hundred forty-nine million, eight hundred sixty-one thousand, ten".