647872698 has 16 divisors (see below), whose sum is σ = 1413540576. Its totient is φ = 196325040.

The previous prime is 647872679. The next prime is 647872699. The reversal of 647872698 is 896278746.

647872698 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (647872699) 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, 4908061 + ... + 4908192.

It is an arithmetic number, because the mean of its divisors is an integer number (88346286).

Almost surely, 2^647872698 is an apocalyptic number.

647872698 is an abundant number, since it is smaller than the sum of its proper divisors (765667878).

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

647872698 is a wasteful number, since it uses less digits than its factorization.

647872698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9816269.

The product of its digits is 8128512, while the sum is 57.

The square root of 647872698 is about 25453.3435524687. The cubic root of 647872698 is about 865.2930714193.

The spelling of 647872698 in words is "six hundred forty-seven million, eight hundred seventy-two thousand, six hundred ninety-eight".