647088853 has 4 divisors (see below), whose sum is σ = 647731180. Its totient is φ = 646446528.

The previous prime is 647088851. The next prime is 647088857. The reversal of 647088853 is 358880746.

647088853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 464919844 + 182169009 = 21562^2 + 13497^2 .

It is a cyclic number.

It is not a de Polignac number, because 647088853 - 2¹ = 647088851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 647088797 and 647088806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647088851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319650 + ... + 321667.

It is an arithmetic number, because the mean of its divisors is an integer number (161932795).

Almost surely, 2^647088853 is an apocalyptic number.

It is an amenable number.

647088853 is a deficient number, since it is larger than the sum of its proper divisors (642327).

647088853 is a wasteful number, since it uses less digits than its factorization.

647088853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642326.

The product of its (nonzero) digits is 1290240, while the sum is 49.

The square root of 647088853 is about 25437.9412099329. The cubic root of 647088853 is about 864.9439650961.

The spelling of 647088853 in words is "six hundred forty-seven million, eighty-eight thousand, eight hundred fifty-three".