66560214 has 16 divisors (see below), whose sum is σ = 152137728. Its totient is φ = 19017192.

The previous prime is 66560213. The next prime is 66560227. The reversal of 66560214 is 41206566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66560213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792342 + ... + 792425.

It is an arithmetic number, because the mean of its divisors is an integer number (9508608).

Almost surely, 2^66560214 is an apocalyptic number.

66560214 is an abundant number, since it is smaller than the sum of its proper divisors (85577514).

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

66560214 is a wasteful number, since it uses less digits than its factorization.

66560214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584779.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 66560214 is about 8158.4443370045. Note that the first 3 decimals coincide. The cubic root of 66560214 is about 405.2641958548.

The spelling of 66560214 in words is "sixty-six million, five hundred sixty thousand, two hundred fourteen".