66514288 has 20 divisors (see below), whose sum is σ = 135654760. Its totient is φ = 31506624.

The previous prime is 66514267. The next prime is 66514309. The reversal of 66514288 is 88241566.

It is an interprime number because it is at equal distance from previous prime (66514267) and next prime (66514309).

It is a self number, because there is not a number n which added to its sum of digits gives 66514288.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109095 + ... + 109702.

It is an arithmetic number, because the mean of its divisors is an integer number (6782738).

Almost surely, 2^66514288 is an apocalyptic number.

It is an amenable number.

66514288 is an abundant number, since it is smaller than the sum of its proper divisors (69140472).

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

66514288 is a wasteful number, since it uses less digits than its factorization.

66514288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218824 (or 218818 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 66514288 is about 8155.6292215868. The cubic root of 66514288 is about 405.1709647550.

The spelling of 66514288 in words is "sixty-six million, five hundred fourteen thousand, two hundred eighty-eight".