647098368 has 104 divisors (see below), whose sum is σ = 1972130688. Its totient is φ = 184860672.

The previous prime is 647098363. The next prime is 647098381. The reversal of 647098368 is 863890746.

647098368 is nontrivially palindromic in base 15.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 647098368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647098363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82255 + ... + 89777.

Almost surely, 2^647098368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647098368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (986065344).

647098368 is an abundant number, since it is smaller than the sum of its proper divisors (1325032320).

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

647098368 is an equidigital number, since it uses as much as digits as its factorization.

647098368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7557 (or 7535 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 647098368 is about 25438.1282330285. The cubic root of 647098368 is about 864.9482045456.

The spelling of 647098368 in words is "six hundred forty-seven million, ninety-eight thousand, three hundred sixty-eight".