85186903 has 2 divisors, whose sum is σ = 85186904. Its totient is φ = 85186902.

The previous prime is 85186883. The next prime is 85186909. The reversal of 85186903 is 30968158.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85186903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85186909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42593451 + 42593452.

It is an arithmetic number, because the mean of its divisors is an integer number (42593452).

Almost surely, 2^85186903 is an apocalyptic number.

85186903 is a deficient number, since it is larger than the sum of its proper divisors (1).

85186903 is an equidigital number, since it uses as much as digits as its factorization.

85186903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 85186903 is about 9229.6751297107. The cubic root of 85186903 is about 440.0049982215.

The spelling of 85186903 in words is "eighty-five million, one hundred eighty-six thousand, nine hundred three".