66413214 has 48 divisors (see below), whose sum is σ = 166927488. Its totient is φ = 18689616.

The previous prime is 66413159. The next prime is 66413287. The reversal of 66413214 is 41231466.

66413214 is a `hidden beast` number, since 6 + 641 + 3 + 2 + 14 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4509 + ... + 12375.

It is an arithmetic number, because the mean of its divisors is an integer number (3477656).

Almost surely, 2^66413214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66413214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83463744).

66413214 is an abundant number, since it is smaller than the sum of its proper divisors (100514274).

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

66413214 is a wasteful number, since it uses less digits than its factorization.

66413214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7949 (or 7946 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 66413214 is about 8149.4302868360. The cubic root of 66413214 is about 404.9656303710.

The spelling of 66413214 in words is "sixty-six million, four hundred thirteen thousand, two hundred fourteen".