649776903 has 8 divisors (see below), whose sum is σ = 866550000. Its totient is φ = 433094208.

The previous prime is 649776901. The next prime is 649776917. The reversal of 649776903 is 309677946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 649776903 - 2¹ = 649776901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649776901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3528 + ... + 36221.

It is an arithmetic number, because the mean of its divisors is an integer number (108318750).

Almost surely, 2^649776903 is an apocalyptic number.

649776903 is a deficient number, since it is larger than the sum of its proper divisors (216773097).

649776903 is a wasteful number, since it uses less digits than its factorization.

649776903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45201.

The product of its (nonzero) digits is 1714608, while the sum is 51.

The square root of 649776903 is about 25490.7219003307. The cubic root of 649776903 is about 866.1399886948.

The spelling of 649776903 in words is "six hundred forty-nine million, seven hundred seventy-six thousand, nine hundred three".