85184669 has 2 divisors, whose sum is σ = 85184670. Its totient is φ = 85184668.

The previous prime is 85184653. The next prime is 85184689. The reversal of 85184669 is 96648158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71605444 + 13579225 = 8462^2 + 3685^2 .

It is a cyclic number.

It is not a de Polignac number, because 85184669 - 2⁴ = 85184653 is a prime.

It is a super-2 number, since 2×85184669² = 14512855665279122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85184639) 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, 42592334 + 42592335.

It is an arithmetic number, because the mean of its divisors is an integer number (42592335).

Almost surely, 2^85184669 is an apocalyptic number.

It is an amenable number.

85184669 is a deficient number, since it is larger than the sum of its proper divisors (1).

85184669 is an equidigital number, since it uses as much as digits as its factorization.

85184669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 47.

The square root of 85184669 is about 9229.5541062394. The cubic root of 85184669 is about 440.0011518565.

The spelling of 85184669 in words is "eighty-five million, one hundred eighty-four thousand, six hundred sixty-nine".