83706281 has 2 divisors, whose sum is σ = 83706282. Its totient is φ = 83706280.

The previous prime is 83706221. The next prime is 83706331. The reversal of 83706281 is 18260738.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81288256 + 2418025 = 9016^2 + 1555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83706281 is a prime.

It is a super-2 number, since 2×83706281² = 14013482957701922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83706221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41853140 + 41853141.

It is an arithmetic number, because the mean of its divisors is an integer number (41853141).

Almost surely, 2^83706281 is an apocalyptic number.

It is an amenable number.

83706281 is a deficient number, since it is larger than the sum of its proper divisors (1).

83706281 is an equidigital number, since it uses as much as digits as its factorization.

83706281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 83706281 is about 9149.1136729194. The cubic root of 83706281 is about 437.4408623195.

The spelling of 83706281 in words is "eighty-three million, seven hundred six thousand, two hundred eighty-one".