85661846 has 16 divisors (see below), whose sum is σ = 130104144. Its totient is φ = 42296544.

The previous prime is 85661843. The next prime is 85661857. The reversal of 85661846 is 64816658.

It is a junction number, because it is equal to n+sod(n) for n = 85661797 and 85661806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85661843) 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, 130856 + ... + 131508.

It is an arithmetic number, because the mean of its divisors is an integer number (8131509).

Almost surely, 2^85661846 is an apocalyptic number.

85661846 is a deficient number, since it is larger than the sum of its proper divisors (44442298).

85661846 is a wasteful number, since it uses less digits than its factorization.

85661846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375.

The product of its digits is 276480, while the sum is 44.

The square root of 85661846 is about 9255.3684961756. The cubic root of 85661846 is about 440.8212039771.

It can be divided in two parts, 856 and 61846, that multiplied together give a square (52940176 = 7276²).

The spelling of 85661846 in words is "eighty-five million, six hundred sixty-one thousand, eight hundred forty-six".