66514284 has 60 divisors (see below), whose sum is σ = 179902800. Its totient is φ = 21403872.

The previous prime is 66514267. The next prime is 66514309. The reversal of 66514284 is 48241566.

66514284 is a `hidden beast` number, since 66 + 514 + 2 + 84 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5857 + ... + 12935.

It is an arithmetic number, because the mean of its divisors is an integer number (2998380).

Almost surely, 2^66514284 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66514284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89951400).

66514284 is an abundant number, since it is smaller than the sum of its proper divisors (113388516).

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

66514284 is a wasteful number, since it uses less digits than its factorization.

66514284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7124 (or 7113 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 66514284 is about 8155.6289763574. The cubic root of 66514284 is about 405.1709566330.

The spelling of 66514284 in words is "sixty-six million, five hundred fourteen thousand, two hundred eighty-four".