86861263 has 2 divisors, whose sum is σ = 86861264. Its totient is φ = 86861262.

The previous prime is 86861231. The next prime is 86861297. The reversal of 86861263 is 36216868.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86861263 - 2⁵ = 86861231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86862263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43430631 + 43430632.

It is an arithmetic number, because the mean of its divisors is an integer number (43430632).

Almost surely, 2^86861263 is an apocalyptic number.

86861263 is a deficient number, since it is larger than the sum of its proper divisors (1).

86861263 is an equidigital number, since it uses as much as digits as its factorization.

86861263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 86861263 is about 9319.9390019463. The cubic root of 86861263 is about 442.8691003609.

The spelling of 86861263 in words is "eighty-six million, eight hundred sixty-one thousand, two hundred sixty-three".