863428085 has 8 divisors (see below), whose sum is σ = 1115814840. Its totient is φ = 637608384.

The previous prime is 863428081. The next prime is 863428087. The reversal of 863428085 is 580824368.

It can be written as a sum of positive squares in 4 ways, for example, as 140517316 + 722910769 = 11854^2 + 26887^2 .

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 863428085 - 2² = 863428081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863428081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6641690 + ... + 6641819.

It is an arithmetic number, because the mean of its divisors is an integer number (139476855).

Almost surely, 2^863428085 is an apocalyptic number.

It is an amenable number.

863428085 is a deficient number, since it is larger than the sum of its proper divisors (252386755).

863428085 is a wasteful number, since it uses less digits than its factorization.

863428085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13283527.

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 863428085 is about 29384.1468312422. The cubic root of 863428085 is about 952.2304323703.

The spelling of 863428085 in words is "eight hundred sixty-three million, four hundred twenty-eight thousand, eighty-five".