83376581 has 2 divisors, whose sum is σ = 83376582. Its totient is φ = 83376580.

The previous prime is 83376547. The next prime is 83376659. The reversal of 83376581 is 18567338.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80013025 + 3363556 = 8945^2 + 1834^2 .

It is a cyclic number.

It is not a de Polignac number, because 83376581 - 2¹⁰ = 83375557 is a prime.

It is a super-2 number, since 2×83376581² = 13903308518499122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83376511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41688290 + 41688291.

It is an arithmetic number, because the mean of its divisors is an integer number (41688291).

Almost surely, 2^83376581 is an apocalyptic number.

It is an amenable number.

83376581 is a deficient number, since it is larger than the sum of its proper divisors (1).

83376581 is an equidigital number, since it uses as much as digits as its factorization.

83376581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 83376581 is about 9131.0777567602. The cubic root of 83376581 is about 436.8657799341.

The spelling of 83376581 in words is "eighty-three million, three hundred seventy-six thousand, five hundred eighty-one".