85804619 has 2 divisors, whose sum is σ = 85804620. Its totient is φ = 85804618.

The previous prime is 85804603. The next prime is 85804643. The reversal of 85804619 is 91640858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85804619 - 2⁴ = 85804603 is a prime.

It is a super-2 number, since 2×85804619² = 14724865283470322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85804699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42902309 + 42902310.

It is an arithmetic number, because the mean of its divisors is an integer number (42902310).

Almost surely, 2^85804619 is an apocalyptic number.

85804619 is a deficient number, since it is larger than the sum of its proper divisors (1).

85804619 is an equidigital number, since it uses as much as digits as its factorization.

85804619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 85804619 is about 9263.0782680489. The cubic root of 85804619 is about 441.0659742961.

The spelling of 85804619 in words is "eighty-five million, eight hundred four thousand, six hundred nineteen".