66325774 has 4 divisors (see below), whose sum is σ = 99488664. Its totient is φ = 33162886.

The previous prime is 66325757. The next prime is 66325783. The reversal of 66325774 is 47752366.

66325774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 16581442 + ... + 16581445.

It is an arithmetic number, because the mean of its divisors is an integer number (24872166).

Almost surely, 2^66325774 is an apocalyptic number.

66325774 is a deficient number, since it is larger than the sum of its proper divisors (33162890).

66325774 is a wasteful number, since it uses less digits than its factorization.

66325774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33162889.

The product of its digits is 211680, while the sum is 40.

The square root of 66325774 is about 8144.0637276485. The cubic root of 66325774 is about 404.7878256622.

The spelling of 66325774 in words is "sixty-six million, three hundred twenty-five thousand, seven hundred seventy-four".