647441255 has 8 divisors (see below), whose sum is σ = 781421472. Its totient is φ = 514958368.

The previous prime is 647441227. The next prime is 647441273. The reversal of 647441255 is 552144746.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 647441255 - 2⁸ = 647440999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 373379 + ... + 375108.

It is an arithmetic number, because the mean of its divisors is an integer number (97677684).

Almost surely, 2^647441255 is an apocalyptic number.

647441255 is a deficient number, since it is larger than the sum of its proper divisors (133980217).

647441255 is a wasteful number, since it uses less digits than its factorization.

647441255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748665.

The product of its digits is 134400, while the sum is 38.

The square root of 647441255 is about 25444.8669676224. The cubic root of 647441255 is about 865.1009516089.

The spelling of 647441255 in words is "six hundred forty-seven million, four hundred forty-one thousand, two hundred fifty-five".