66081050 has 72 divisors (see below), whose sum is σ = 148535136. Its totient is φ = 21422880.

The previous prime is 66081019. The next prime is 66081061. The reversal of 66081050 is 5018066.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 126089 + ... + 126611.

It is an arithmetic number, because the mean of its divisors is an integer number (2062988).

Almost surely, 2^66081050 is an apocalyptic number.

66081050 is an abundant number, since it is smaller than the sum of its proper divisors (82454086).

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

66081050 is a wasteful number, since it uses less digits than its factorization.

66081050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 66081050 is about 8129.0251568069. The cubic root of 66081050 is about 404.2893598994.

The spelling of 66081050 in words is "sixty-six million, eighty-one thousand, fifty".