66109060 has 24 divisors (see below), whose sum is σ = 142059456. Its totient is φ = 25828320.

The previous prime is 66109031. The next prime is 66109079. The reversal of 66109060 is 6090166.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37576 + ... + 39295.

It is an arithmetic number, because the mean of its divisors is an integer number (5919144).

Almost surely, 2^66109060 is an apocalyptic number.

It is an amenable number.

66109060 is an abundant number, since it is smaller than the sum of its proper divisors (75950396).

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

66109060 is a wasteful number, since it uses less digits than its factorization.

66109060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76923 (or 76921 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 66109060 is about 8130.7478130858. The cubic root of 66109060 is about 404.3464743336.

The spelling of 66109060 in words is "sixty-six million, one hundred nine thousand, sixty".