649103806 has 16 divisors (see below), whose sum is σ = 1065744288. Its totient is φ = 294674400.

The previous prime is 649103779. The next prime is 649103831. The reversal of 649103806 is 608301946.

649103806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203050 + ... + 206221.

It is an arithmetic number, because the mean of its divisors is an integer number (66609018).

Almost surely, 2^649103806 is an apocalyptic number.

649103806 is a deficient number, since it is larger than the sum of its proper divisors (416640482).

649103806 is a wasteful number, since it uses less digits than its factorization.

649103806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409347.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 649103806 is about 25477.5156952164. The cubic root of 649103806 is about 865.8408102907.

The spelling of 649103806 in words is "six hundred forty-nine million, one hundred three thousand, eight hundred six".