66030140 has 24 divisors (see below), whose sum is σ = 151269552. Its totient is φ = 24010880.

The previous prime is 66030119. The next prime is 66030229. The reversal of 66030140 is 4103066.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent 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, 149849 + ... + 150288.

It is an arithmetic number, because the mean of its divisors is an integer number (6302898).

Almost surely, 2^66030140 is an apocalyptic number.

It is an amenable number.

66030140 is an abundant number, since it is smaller than the sum of its proper divisors (85239412).

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

66030140 is a wasteful number, since it uses less digits than its factorization.

66030140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300157 (or 300155 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 66030140 is about 8125.8931816755. The cubic root of 66030140 is about 404.1855093540.

The spelling of 66030140 in words is "sixty-six million, thirty thousand, one hundred forty".