649810703 has 4 divisors (see below), whose sum is σ = 688034880. Its totient is φ = 611586528.

The previous prime is 649810691. The next prime is 649810709. The reversal of 649810703 is 307018946.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 649810703 - 2⁶ = 649810639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649810709) 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 3 ways as a sum of consecutive naturals, for example, 19112063 + ... + 19112096.

It is an arithmetic number, because the mean of its divisors is an integer number (172008720).

Almost surely, 2^649810703 is an apocalyptic number.

649810703 is a deficient number, since it is larger than the sum of its proper divisors (38224177).

649810703 is a wasteful number, since it uses less digits than its factorization.

649810703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38224176.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 649810703 is about 25491.3848780328. The cubic root of 649810703 is about 866.1550066821.

The spelling of 649810703 in words is "six hundred forty-nine million, eight hundred ten thousand, seven hundred three".