649487306 has 32 divisors (see below), whose sum is σ = 1096018560. Its totient is φ = 286582464.

The previous prime is 649487303. The next prime is 649487327. The reversal of 649487306 is 603784946.

It is not an unprimeable number, because it can be changed into a prime (649487303) 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, 73481 + ... + 81843.

It is an arithmetic number, because the mean of its divisors is an integer number (34250580).

Almost surely, 2^649487306 is an apocalyptic number.

649487306 is a deficient number, since it is larger than the sum of its proper divisors (446531254).

649487306 is a wasteful number, since it uses less digits than its factorization.

649487306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8510.

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 649487306 is about 25485.0408279053. The cubic root of 649487306 is about 866.0112938486.

The spelling of 649487306 in words is "six hundred forty-nine million, four hundred eighty-seven thousand, three hundred six".