802271647 has 4 divisors (see below), whose sum is σ = 802526256. Its totient is φ = 802017040.

The previous prime is 802271621. The next prime is 802271651. The reversal of 802271647 is 746172208.

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 802271647 - 2²³ = 793883039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (802271677) 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, 122518 + ... + 128899.

It is an arithmetic number, because the mean of its divisors is an integer number (200631564).

Almost surely, 2^802271647 is an apocalyptic number.

802271647 is a deficient number, since it is larger than the sum of its proper divisors (254609).

802271647 is a wasteful number, since it uses less digits than its factorization.

802271647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254608.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 802271647 is about 28324.4002054765. The cubic root of 802271647 is about 929.1956072986.

The spelling of 802271647 in words is "eight hundred two million, two hundred seventy-one thousand, six hundred forty-seven".