66306406 has 8 divisors (see below), whose sum is σ = 99495864. Its totient is φ = 33141120.

The previous prime is 66306397. The next prime is 66306421. The reversal of 66306406 is 60460366.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 4486 + ... + 12358.

It is an arithmetic number, because the mean of its divisors is an integer number (12436983).

Almost surely, 2^66306406 is an apocalyptic number.

66306406 is a deficient number, since it is larger than the sum of its proper divisors (33189458).

66306406 is a wasteful number, since it uses less digits than its factorization.

66306406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12086.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 66306406 is about 8142.8745538661. The cubic root of 66306406 is about 404.7484207000.

The spelling of 66306406 in words is "sixty-six million, three hundred six thousand, four hundred six".