66315634 has 64 divisors (see below), whose sum is σ = 132710400. Its totient is φ = 24091200.

The previous prime is 66315629. The next prime is 66315653. The reversal of 66315634 is 43651366.

It is a self number, because there is not a number n which added to its sum of digits gives 66315634.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 138207 + ... + 138685.

It is an arithmetic number, because the mean of its divisors is an integer number (2073600).

Almost surely, 2^66315634 is an apocalyptic number.

66315634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

66315634 is a wasteful number, since it uses less digits than its factorization.

66315634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559.

The product of its digits is 38880, while the sum is 34.

The square root of 66315634 is about 8143.4411645201. The cubic root of 66315634 is about 404.7671963880.

The spelling of 66315634 in words is "sixty-six million, three hundred fifteen thousand, six hundred thirty-four".