647880283 has 4 divisors (see below), whose sum is σ = 648005008. Its totient is φ = 647755560.

The previous prime is 647880263. The next prime is 647880287. The reversal of 647880283 is 382088746.

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

It is a cyclic number.

It is not a de Polignac number, because 647880283 - 2²⁵ = 614325851 is a prime.

It is a super-2 number, since 2×647880283² = 839497722200320178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647880287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54216 + ... + 65077.

It is an arithmetic number, because the mean of its divisors is an integer number (162001252).

Almost surely, 2^647880283 is an apocalyptic number.

647880283 is a deficient number, since it is larger than the sum of its proper divisors (124725).

647880283 is a wasteful number, since it uses less digits than its factorization.

647880283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124724.

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 647880283 is about 25453.4925501394. The cubic root of 647880283 is about 865.2964482258.

The spelling of 647880283 in words is "six hundred forty-seven million, eight hundred eighty thousand, two hundred eighty-three".