85648237 has 8 divisors (see below), whose sum is σ = 86803704. Its totient is φ = 84499968.

The previous prime is 85648231. The next prime is 85648247. The reversal of 85648237 is 73284658.

It can be written as a sum of positive squares in 4 ways, for example, as 5885476 + 79762761 = 2426^2 + 8931^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85648237 - 2⁷ = 85648109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85648193 and 85648202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85648231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24703 + ... + 27955.

It is an arithmetic number, because the mean of its divisors is an integer number (10850463).

Almost surely, 2^85648237 is an apocalyptic number.

It is an amenable number.

85648237 is a deficient number, since it is larger than the sum of its proper divisors (1155467).

85648237 is a wasteful number, since it uses less digits than its factorization.

85648237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3599.

The product of its digits is 322560, while the sum is 43.

The square root of 85648237 is about 9254.6332720427. The cubic root of 85648237 is about 440.7978584864.

The spelling of 85648237 in words is "eighty-five million, six hundred forty-eight thousand, two hundred thirty-seven".