66280316 has 12 divisors (see below), whose sum is σ = 118179432. Its totient is φ = 32514768.

The previous prime is 66280309. The next prime is 66280321. The reversal of 66280316 is 61308266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156110 + ... + 156533.

It is an arithmetic number, because the mean of its divisors is an integer number (9848286).

Almost surely, 2^66280316 is an apocalyptic number.

It is an amenable number.

66280316 is a deficient number, since it is larger than the sum of its proper divisors (51899116).

66280316 is a wasteful number, since it uses less digits than its factorization.

66280316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312700 (or 312698 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 66280316 is about 8141.2723821280. The cubic root of 66280316 is about 404.6953274307.

The spelling of 66280316 in words is "sixty-six million, two hundred eighty thousand, three hundred sixteen".