86281261 has 16 divisors (see below), whose sum is σ = 101505600. Its totient is φ = 72489600.

The previous prime is 86281253. The next prime is 86281271. The reversal of 86281261 is 16218268.

86281261 = 985² + 986² + ... + 1066².

It is a cyclic number.

It is not a de Polignac number, because 86281261 - 2³ = 86281253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86281271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3535 + ... + 13603.

It is an arithmetic number, because the mean of its divisors is an integer number (6344100).

Almost surely, 2^86281261 is an apocalyptic number.

It is an amenable number.

86281261 is a deficient number, since it is larger than the sum of its proper divisors (15224339).

86281261 is a wasteful number, since it uses less digits than its factorization.

86281261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10140.

The product of its digits is 9216, while the sum is 34.

The square root of 86281261 is about 9288.7706936925. The cubic root of 86281261 is about 441.8811693004.

It can be divided in two parts, 8628 and 1261, that added together give a palindrome (9889).

The spelling of 86281261 in words is "eighty-six million, two hundred eighty-one thousand, two hundred sixty-one".