86281061 has 4 divisors (see below), whose sum is σ = 89256300. Its totient is φ = 83305824.

The previous prime is 86281057. The next prime is 86281067. The reversal of 86281061 is 16018268.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16240900 + 70040161 = 4030^2 + 8369^2 .

It is a cyclic number.

It is not a de Polignac number, because 86281061 - 2² = 86281057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86281067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1487576 + ... + 1487633.

It is an arithmetic number, because the mean of its divisors is an integer number (22314075).

Almost surely, 2^86281061 is an apocalyptic number.

It is an amenable number.

86281061 is a deficient number, since it is larger than the sum of its proper divisors (2975239).

86281061 is a wasteful number, since it uses less digits than its factorization.

86281061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975238.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 86281061 is about 9288.7599279990. The cubic root of 86281061 is about 441.8808278732.

The spelling of 86281061 in words is "eighty-six million, two hundred eighty-one thousand, sixty-one".