66480974 has 16 divisors (see below), whose sum is σ = 116119008. Its totient is φ = 27953952.

The previous prime is 66480941. The next prime is 66480977. The reversal of 66480974 is 47908466.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66480977) 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, 44057 + ... + 45540.

It is an arithmetic number, because the mean of its divisors is an integer number (7257438).

Almost surely, 2^66480974 is an apocalyptic number.

66480974 is a deficient number, since it is larger than the sum of its proper divisors (49638034).

66480974 is a wasteful number, since it uses less digits than its factorization.

66480974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89659.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 66480974 is about 8153.5865727911. The cubic root of 66480974 is about 405.1033095186.

The spelling of 66480974 in words is "sixty-six million, four hundred eighty thousand, nine hundred seventy-four".