649768801 has 8 divisors (see below), whose sum is σ = 709247808. Its totient is φ = 590358000.

The previous prime is 649768799. The next prime is 649768811. The reversal of 649768801 is 108867946.

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

It is a cyclic number.

It is not a de Polignac number, because 649768801 - 2¹ = 649768799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649768811) 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, 4011 + ... + 36271.

It is an arithmetic number, because the mean of its divisors is an integer number (88655976).

Almost surely, 2^649768801 is an apocalyptic number.

It is an amenable number.

649768801 is a deficient number, since it is larger than the sum of its proper divisors (59479007).

649768801 is a wasteful number, since it uses less digits than its factorization.

649768801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34103.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 649768801 is about 25490.5629792674. The cubic root of 649768801 is about 866.1363887436.

The spelling of 649768801 in words is "six hundred forty-nine million, seven hundred sixty-eight thousand, eight hundred one".