66047306 has 32 divisors (see below), whose sum is σ = 117210240. Its totient is φ = 27618624.

The previous prime is 66047291. The next prime is 66047309. The reversal of 66047306 is 60374066.

66047306 = 313² + 314² + ... + 611².

It is not an unprimeable number, because it can be changed into a prime (66047309) 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 15 ways as a sum of consecutive naturals, for example, 8456 + ... + 14268.

It is an arithmetic number, because the mean of its divisors is an integer number (3662820).

Almost surely, 2^66047306 is an apocalyptic number.

66047306 is a deficient number, since it is larger than the sum of its proper divisors (51162934).

66047306 is a wasteful number, since it uses less digits than its factorization.

66047306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5870.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 66047306 is about 8126.9493661521. The cubic root of 66047306 is about 404.2205319830.

The spelling of 66047306 in words is "sixty-six million, forty-seven thousand, three hundred six".