66429284 has 6 divisors (see below), whose sum is σ = 116251254. Its totient is φ = 33214640.

The previous prime is 66429277. The next prime is 66429317. The reversal of 66429284 is 48292466.

It can be written as a sum of positive squares in only one way, i.e., 65966884 + 462400 = 8122^2 + 680^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8303657 + ... + 8303664.

It is an arithmetic number, because the mean of its divisors is an integer number (19375209).

Almost surely, 2^66429284 is an apocalyptic number.

It is an amenable number.

66429284 is a deficient number, since it is larger than the sum of its proper divisors (49821970).

66429284 is a wasteful number, since it uses less digits than its factorization.

66429284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16607325 (or 16607323 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 66429284 is about 8150.4161856926. The cubic root of 66429284 is about 404.9982909037.

The spelling of 66429284 in words is "sixty-six million, four hundred twenty-nine thousand, two hundred eighty-four".