83705387 has 2 divisors, whose sum is σ = 83705388. Its totient is φ = 83705386.

The previous prime is 83705381. The next prime is 83705389. The reversal of 83705387 is 78350738.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83705387 - 2⁴ = 83705371 is a prime.

Together with 83705389, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83705381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41852693 + 41852694.

It is an arithmetic number, because the mean of its divisors is an integer number (41852694).

Almost surely, 2^83705387 is an apocalyptic number.

83705387 is a deficient number, since it is larger than the sum of its proper divisors (1).

83705387 is an equidigital number, since it uses as much as digits as its factorization.

83705387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 83705387 is about 9149.0648155973. The cubic root of 83705387 is about 437.4393049950.

The spelling of 83705387 in words is "eighty-three million, seven hundred five thousand, three hundred eighty-seven".