85287386003689 has 9 divisors (see below), whose sum is σ = 88127636407101. Its totient is φ = 82535902950060.

The previous prime is 85287386003669. The next prime is 85287386003747. The reversal of 85287386003689 is 98630068378258.

The square root of 85287386003689 is 9235117.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 85287386003689 - 2⁹ = 85287386003177 is a prime.

It is a super-2 number, since 2×85287386003689² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85287386003669) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 286139674 + ... + 286437580.

It is an arithmetic number, because the mean of its divisors is an integer number (9791959600789).

Almost surely, 2^{85287386003689} is an apocalyptic number.

85287386003689 is the 9235117-th square number.

85287386003689 is the 4617559-th centered octagonal number.

It is an amenable number.

85287386003689 is a deficient number, since it is larger than the sum of its proper divisors (2840250403412).

85287386003689 is an frugal number, since it uses more digits than its factorization.

85287386003689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595876 (or 297938 counting only the distinct ones).

The product of its (nonzero) digits is 836075520, while the sum is 73.

The spelling of 85287386003689 in words is "eighty-five trillion, two hundred eighty-seven billion, three hundred eighty-six million, three thousand, six hundred eighty-nine".