863802261 has 12 divisors (see below), whose sum is σ = 1425959392. Its totient is φ = 493601256.

The previous prime is 863802253. The next prime is 863802271. The reversal of 863802261 is 162208368.

It is not a de Polignac number, because 863802261 - 2³ = 863802253 is a prime.

It is a super-2 number, since 2×863802261² = 1492308692217424242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863802221) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 6855511 + ... + 6855636.

Almost surely, 2^863802261 is an apocalyptic number.

It is an amenable number.

863802261 is a deficient number, since it is larger than the sum of its proper divisors (562157131).

863802261 is a wasteful number, since it uses less digits than its factorization.

863802261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13711160 (or 13711157 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 863802261 is about 29390.5131122272. The cubic root of 863802261 is about 952.3679656610.

The spelling of 863802261 in words is "eight hundred sixty-three million, eight hundred two thousand, two hundred sixty-one".