85984637 has 2 divisors, whose sum is σ = 85984638. Its totient is φ = 85984636.

The previous prime is 85984631. The next prime is 85984643. The reversal of 85984637 is 73648958.

It is a balanced prime because it is at equal distance from previous prime (85984631) and next prime (85984643).

It can be written as a sum of positive squares in only one way, i.e., 63904036 + 22080601 = 7994^2 + 4699^2 .

It is a cyclic number.

It is not a de Polignac number, because 85984637 - 2¹⁸ = 85722493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85984631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42992318 + 42992319.

It is an arithmetic number, because the mean of its divisors is an integer number (42992319).

Almost surely, 2^85984637 is an apocalyptic number.

It is an amenable number.

85984637 is a deficient number, since it is larger than the sum of its proper divisors (1).

85984637 is an equidigital number, since it uses as much as digits as its factorization.

85984637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 50.

The square root of 85984637 is about 9272.7901410525. The cubic root of 85984637 is about 441.3742108192.

The spelling of 85984637 in words is "eighty-five million, nine hundred eighty-four thousand, six hundred thirty-seven".