85385237 has 16 divisors (see below), whose sum is σ = 103576320. Its totient is φ = 68713728.

The previous prime is 85385231. The next prime is 85385243. The reversal of 85385237 is 73258358.

It is an interprime number because it is at equal distance from previous prime (85385231) and next prime (85385243).

It is a de Polignac number, because none of the positive numbers 2^k-85385237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85385194 and 85385203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85385231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76439 + ... + 77547.

It is an arithmetic number, because the mean of its divisors is an integer number (6473520).

Almost surely, 2^85385237 is an apocalyptic number.

It is an amenable number.

85385237 is a deficient number, since it is larger than the sum of its proper divisors (18191083).

85385237 is a wasteful number, since it uses less digits than its factorization.

85385237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780.

The product of its digits is 201600, while the sum is 41.

The square root of 85385237 is about 9240.4132483347. The cubic root of 85385237 is about 440.3462099544.

The spelling of 85385237 in words is "eighty-five million, three hundred eighty-five thousand, two hundred thirty-seven".