85690519 has 2 divisors, whose sum is σ = 85690520. Its totient is φ = 85690518.

The previous prime is 85690511. The next prime is 85690547. The reversal of 85690519 is 91509658.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85690519 - 2³ = 85690511 is a prime.

It is a super-2 number, since 2×85690519² = 14685730092978722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85690511) 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, 42845259 + 42845260.

It is an arithmetic number, because the mean of its divisors is an integer number (42845260).

Almost surely, 2^85690519 is an apocalyptic number.

85690519 is a deficient number, since it is larger than the sum of its proper divisors (1).

85690519 is an equidigital number, since it uses as much as digits as its factorization.

85690519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 85690519 is about 9256.9173594669. The cubic root of 85690519 is about 440.8703828394.

The spelling of 85690519 in words is "eighty-five million, six hundred ninety thousand, five hundred nineteen".