66356371 has 8 divisors (see below), whose sum is σ = 68246064. Its totient is φ = 64490400.

The previous prime is 66356359. The next prime is 66356377. The reversal of 66356371 is 17365366.

66356371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66356371 - 2⁷ = 66356243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66356371.

It is not an unprimeable number, because it can be changed into a prime (66356377) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 180 + ... + 11521.

It is an arithmetic number, because the mean of its divisors is an integer number (8530758).

Almost surely, 2^66356371 is an apocalyptic number.

66356371 is a deficient number, since it is larger than the sum of its proper divisors (1889693).

66356371 is a wasteful number, since it uses less digits than its factorization.

66356371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11861.

The product of its digits is 68040, while the sum is 37.

The square root of 66356371 is about 8145.9419958652. The cubic root of 66356371 is about 404.8500608404.

The spelling of 66356371 in words is "sixty-six million, three hundred fifty-six thousand, three hundred seventy-one".