166003544 has 16 divisors (see below), whose sum is σ = 355722000. Its totient is φ = 71144352.

The previous prime is 166003531. The next prime is 166003549. The reversal of 166003544 is 445300661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166003549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1482119 + ... + 1482230.

It is an arithmetic number, because the mean of its divisors is an integer number (22232625).

Almost surely, 2^166003544 is an apocalyptic number.

166003544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

166003544 is an abundant number, since it is smaller than the sum of its proper divisors (189718456).

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

166003544 is a wasteful number, since it uses less digits than its factorization.

166003544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2964362 (or 2964358 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 166003544 is about 12884.2362598642. The cubic root of 166003544 is about 549.5903770950.

The spelling of 166003544 in words is "one hundred sixty-six million, three thousand, five hundred forty-four".