85377685 has 12 divisors (see below), whose sum is σ = 105305508. Its totient is φ = 66450816.

The previous prime is 85377683. The next prime is 85377707. The reversal of 85377685 is 58677358.

It can be written as a sum of positive squares in 6 ways, for example, as 18645124 + 66732561 = 4318^2 + 8169^2 .

It is not a de Polignac number, because 85377685 - 2¹ = 85377683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85377683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 609 + ... + 13081.

It is an arithmetic number, because the mean of its divisors is an integer number (8775459).

Almost surely, 2^85377685 is an apocalyptic number.

It is an amenable number.

85377685 is a deficient number, since it is larger than the sum of its proper divisors (19927823).

85377685 is a wasteful number, since it uses less digits than its factorization.

85377685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12552 (or 12515 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 49.

The square root of 85377685 is about 9240.0045995660. The cubic root of 85377685 is about 440.3332272549. Note that the first 3 decimals are identical.

The spelling of 85377685 in words is "eighty-five million, three hundred seventy-seven thousand, six hundred eighty-five".