66346064 has 20 divisors (see below), whose sum is σ = 128765940. Its totient is φ = 33116160.

The previous prime is 66346057. The next prime is 66346079. The reversal of 66346064 is 46064366.

66346064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 30250000 + 36096064 = 5500^2 + 6008^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7022 + ... + 13490.

It is an arithmetic number, because the mean of its divisors is an integer number (6438297).

Almost surely, 2^66346064 is an apocalyptic number.

It is an amenable number.

66346064 is a deficient number, since it is larger than the sum of its proper divisors (62419876).

66346064 is a wasteful number, since it uses less digits than its factorization.

66346064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7118 (or 7112 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 66346064 is about 8145.3093250042. The cubic root of 66346064 is about 404.8290982431.

The spelling of 66346064 in words is "sixty-six million, three hundred forty-six thousand, sixty-four".