66064047 has 16 divisors (see below), whose sum is σ = 101613312. Its totient is φ = 37396800.

The previous prime is 66064043. The next prime is 66064049. The reversal of 66064047 is 74046066.

It is not a de Polignac number, because 66064047 - 2² = 66064043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66063999 and 66064017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66064043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12454 + ... + 16947.

It is an arithmetic number, because the mean of its divisors is an integer number (6350832).

Almost surely, 2^66064047 is an apocalyptic number.

66064047 is a deficient number, since it is larger than the sum of its proper divisors (35549265).

66064047 is a wasteful number, since it uses less digits than its factorization.

66064047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29518.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 66064047 is about 8127.9792691665. The cubic root of 66064047 is about 404.2546816689.

The spelling of 66064047 in words is "sixty-six million, sixty-four thousand, forty-seven".