66416306 has 16 divisors (see below), whose sum is σ = 109353888. Its totient is φ = 30002400.

The previous prime is 66416281. The next prime is 66416309. The reversal of 66416306 is 60361466.

It is a super-2 number, since 2×66416306² = 8822251405371272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66416309) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5675 + ... + 12846.

It is an arithmetic number, because the mean of its divisors is an integer number (6834618).

Almost surely, 2^66416306 is an apocalyptic number.

66416306 is a deficient number, since it is larger than the sum of its proper divisors (42937582).

66416306 is a wasteful number, since it uses less digits than its factorization.

66416306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18697.

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

The square root of 66416306 is about 8149.6199911407. The cubic root of 66416306 is about 404.9719149351.

The spelling of 66416306 in words is "sixty-six million, four hundred sixteen thousand, three hundred six".