647683289 has 16 divisors (see below), whose sum is σ = 780658560. Its totient is φ = 530069760.

The previous prime is 647683241. The next prime is 647683291. The reversal of 647683289 is 982386746.

It is not a de Polignac number, because 647683289 - 2⁸ = 647683033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 647683289.

It is not an unprimeable number, because it can be changed into a prime (647685289) 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 15 ways as a sum of consecutive naturals, for example, 70994 + ... + 79595.

It is an arithmetic number, because the mean of its divisors is an integer number (48791160).

Almost surely, 2^647683289 is an apocalyptic number.

It is an amenable number.

647683289 is a deficient number, since it is larger than the sum of its proper divisors (132975271).

647683289 is a wasteful number, since it uses less digits than its factorization.

647683289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150640.

The product of its digits is 3483648, while the sum is 53.

The square root of 647683289 is about 25449.6225708752. The cubic root of 647683289 is about 865.2087388695.

The spelling of 647683289 in words is "six hundred forty-seven million, six hundred eighty-three thousand, two hundred eighty-nine".