166040540 has 12 divisors (see below), whose sum is σ = 348685176. Its totient is φ = 66416208.

The previous prime is 166040527. The next prime is 166040551. The reversal of 166040540 is 45040661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4150994 + ... + 4151033.

It is an arithmetic number, because the mean of its divisors is an integer number (29057098).

Almost surely, 2^166040540 is an apocalyptic number.

166040540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166040540 is an abundant number, since it is smaller than the sum of its proper divisors (182644636).

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

166040540 is a wasteful number, since it uses less digits than its factorization.

166040540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8302036 (or 8302034 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 166040540 is about 12885.6718877985. The cubic root of 166040540 is about 549.6312017963.

The spelling of 166040540 in words is "one hundred sixty-six million, forty thousand, five hundred forty".