85874644 has 12 divisors (see below), whose sum is σ = 151769268. Its totient is φ = 42512000.

The previous prime is 85874639. The next prime is 85874647. The reversal of 85874644 is 44647858.

It can be written as a sum of positive squares in 2 ways, for example, as 83503044 + 2371600 = 9138^2 + 1540^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85874594 and 85874603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85874647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105877 + ... + 106684.

It is an arithmetic number, because the mean of its divisors is an integer number (12647439).

Almost surely, 2^85874644 is an apocalyptic number.

It is an amenable number.

85874644 is a deficient number, since it is larger than the sum of its proper divisors (65894624).

85874644 is a wasteful number, since it uses less digits than its factorization.

85874644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212666 (or 212664 counting only the distinct ones).

The product of its digits is 860160, while the sum is 46.

The square root of 85874644 is about 9266.8572882073. The cubic root of 85874644 is about 441.1859260621.

It can be divided in two parts, 8587 and 4644, that added together give a palindrome (13231).

The spelling of 85874644 in words is "eighty-five million, eight hundred seventy-four thousand, six hundred forty-four".