863072253 has 10 divisors (see below), whose sum is σ = 1289280894. Its totient is φ = 575381448.

The previous prime is 863072251. The next prime is 863072257. The reversal of 863072253 is 352270368.

It can be written as a sum of positive squares in only one way, i.e., 849256164 + 13816089 = 29142^2 + 3717^2 .

It is not a de Polignac number, because 863072253 - 2¹ = 863072251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863072251) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5327526 + ... + 5327687.

Almost surely, 2^863072253 is an apocalyptic number.

It is an amenable number.

863072253 is a deficient number, since it is larger than the sum of its proper divisors (426208641).

863072253 is a wasteful number, since it uses less digits than its factorization.

863072253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10655225 (or 10655216 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 863072253 is about 29378.0913777597. The cubic root of 863072253 is about 952.0996047920.

The spelling of 863072253 in words is "eight hundred sixty-three million, seventy-two thousand, two hundred fifty-three".