85860778 has 16 divisors (see below), whose sum is σ = 136732104. Its totient is φ = 40296960.

The previous prime is 85860773. The next prime is 85860779. The reversal of 85860778 is 87706858.

It can be written as a sum of positive squares in 4 ways, for example, as 78801129 + 7059649 = 8877^2 + 2657^2 .

It is not an unprimeable number, because it can be changed into a prime (85860773) 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, 10318 + ... + 16678.

Almost surely, 2^85860778 is an apocalyptic number.

85860778 is a deficient number, since it is larger than the sum of its proper divisors (50871326).

85860778 is a wasteful number, since it uses less digits than its factorization.

85860778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6777.

The product of its (nonzero) digits is 752640, while the sum is 49.

The square root of 85860778 is about 9266.1091079266. The cubic root of 85860778 is about 441.1621789929.

The spelling of 85860778 in words is "eighty-five million, eight hundred sixty thousand, seven hundred seventy-eight".