83285681 has 2 divisors, whose sum is σ = 83285682. Its totient is φ = 83285680.

The previous prime is 83285677. The next prime is 83285687. The reversal of 83285681 is 18658238.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75968656 + 7317025 = 8716^2 + 2705^2 .

It is a cyclic number.

It is not a de Polignac number, because 83285681 - 2² = 83285677 is a prime.

It is a super-2 number, since 2×83285681² = 13873009319267522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (83285687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41642840 + 41642841.

It is an arithmetic number, because the mean of its divisors is an integer number (41642841).

Almost surely, 2^83285681 is an apocalyptic number.

It is an amenable number.

83285681 is a deficient number, since it is larger than the sum of its proper divisors (1).

83285681 is an equidigital number, since it uses as much as digits as its factorization.

83285681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 41.

The square root of 83285681 is about 9126.0988927362. The cubic root of 83285681 is about 436.7069601987.

The spelling of 83285681 in words is "eighty-three million, two hundred eighty-five thousand, six hundred eighty-one".