66406316 has 12 divisors (see below), whose sum is σ = 116268600. Its totient is φ = 33186720.

The previous prime is 66406303. The next prime is 66406331. The reversal of 66406316 is 61360466.

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, 11960 + ... + 16608.

It is an arithmetic number, because the mean of its divisors is an integer number (9689050).

Almost surely, 2^66406316 is an apocalyptic number.

It is an amenable number.

66406316 is a deficient number, since it is larger than the sum of its proper divisors (49862284).

66406316 is a wasteful number, since it uses less digits than its factorization.

66406316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8224 (or 8222 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 66406316 is about 8149.0070560774. The cubic root of 66406316 is about 404.9516093177.

The spelling of 66406316 in words is "sixty-six million, four hundred six thousand, three hundred sixteen".