166535544 has 64 divisors (see below), whose sum is σ = 477066240. Its totient is φ = 47456640.

The previous prime is 166535539. The next prime is 166535569. The reversal of 166535544 is 445535661.

166535544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76714 + ... + 78854.

It is an arithmetic number, because the mean of its divisors is an integer number (7454160).

Almost surely, 2^166535544 is an apocalyptic number.

166535544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166535544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238533120).

166535544 is an abundant number, since it is smaller than the sum of its proper divisors (310530696).

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

166535544 is a wasteful number, since it uses less digits than its factorization.

166535544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620 (or 2616 counting only the distinct ones).

The product of its digits is 216000, while the sum is 39.

The square root of 166535544 is about 12904.8651290899. The cubic root of 166535544 is about 550.1768511169.

The spelling of 166535544 in words is "one hundred sixty-six million, five hundred thirty-five thousand, five hundred forty-four".