66094540 has 24 divisors (see below), whose sum is σ = 146104560. Its totient is φ = 25046208.

The previous prime is 66094531. The next prime is 66094541. The reversal of 66094540 is 4549066.

66094540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66094496 and 66094505.

It is not an unprimeable number, because it can be changed into a prime (66094541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86587 + ... + 87346.

It is an arithmetic number, because the mean of its divisors is an integer number (6087690).

Almost surely, 2^66094540 is an apocalyptic number.

It is an amenable number.

66094540 is an abundant number, since it is smaller than the sum of its proper divisors (80010020).

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

66094540 is a wasteful number, since it uses less digits than its factorization.

66094540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173961 (or 173959 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 66094540 is about 8129.8548572530. The cubic root of 66094540 is about 404.3168690082.

The spelling of 66094540 in words is "sixty-six million, ninety-four thousand, five hundred forty".