86756281 has 2 divisors, whose sum is σ = 86756282. Its totient is φ = 86756280.

The previous prime is 86756233. The next prime is 86756291. The reversal of 86756281 is 18265768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51840000 + 34916281 = 7200^2 + 5909^2 .

It is a cyclic number.

It is not a de Polignac number, because 86756281 - 2¹³ = 86748089 is a prime.

It is a super-2 number, since 2×86756281² = 15053304585901922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86756291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43378140 + 43378141.

It is an arithmetic number, because the mean of its divisors is an integer number (43378141).

Almost surely, 2^86756281 is an apocalyptic number.

It is an amenable number.

86756281 is a deficient number, since it is larger than the sum of its proper divisors (1).

86756281 is an equidigital number, since it uses as much as digits as its factorization.

86756281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 43.

The square root of 86756281 is about 9314.3051807421. The cubic root of 86756281 is about 442.6906087229.

The spelling of 86756281 in words is "eighty-six million, seven hundred fifty-six thousand, two hundred eighty-one".