647368788 has 48 divisors (see below), whose sum is σ = 1682924544. Its totient is φ = 191996640.

The previous prime is 647368781. The next prime is 647368811. The reversal of 647368788 is 887863746.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647368781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45970 + ... + 58377.

It is an arithmetic number, because the mean of its divisors is an integer number (35060928).

Almost surely, 2^647368788 is an apocalyptic number.

It is an amenable number.

647368788 is an abundant number, since it is smaller than the sum of its proper divisors (1035555756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647368788 is a wasteful number, since it uses less digits than its factorization.

647368788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104412 (or 104410 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 57.

The square root of 647368788 is about 25443.4429274027. The cubic root of 647368788 is about 865.0686739779.

The spelling of 647368788 in words is "six hundred forty-seven million, three hundred sixty-eight thousand, seven hundred eighty-eight".