166113636 has 96 divisors (see below), whose sum is σ = 442702848. Its totient is φ = 48090240.

The previous prime is 166113551. The next prime is 166113641. The reversal of 166113636 is 636311661.

166113636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 166113597 and 166113606.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240051 + ... + 240741.

It is an arithmetic number, because the mean of its divisors is an integer number (4611488).

Almost surely, 2^166113636 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 166113636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221351424).

166113636 is an abundant number, since it is smaller than the sum of its proper divisors (276589212).

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

166113636 is a wasteful number, since it uses less digits than its factorization.

166113636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 799 counting only the distinct ones).

The product of its digits is 11664, while the sum is 33.

The square root of 166113636 is about 12888.5079043309. The cubic root of 166113636 is about 549.7118446486.

The spelling of 166113636 in words is "one hundred sixty-six million, one hundred thirteen thousand, six hundred thirty-six".