85630636 has 48 divisors (see below), whose sum is σ = 188238400. Its totient is φ = 33868800.

The previous prime is 85630631. The next prime is 85630651. The reversal of 85630636 is 63603658.

It is a junction number, because it is equal to n+sod(n) for n = 85630595 and 85630604.

It is not an unprimeable number, because it can be changed into a prime (85630631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15436 + ... + 20236.

Almost surely, 2^85630636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85630636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94119200).

85630636 is an abundant number, since it is smaller than the sum of its proper divisors (102607764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85630636 is a wasteful number, since it uses less digits than its factorization.

85630636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4839 (or 4823 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 85630636 is about 9253.6822940924. The cubic root of 85630636 is about 440.7676612716.

The spelling of 85630636 in words is "eighty-five million, six hundred thirty thousand, six hundred thirty-six".