66348091 has 8 divisors (see below), whose sum is σ = 68649984. Its totient is φ = 64056360.

The previous prime is 66348089. The next prime is 66348101. The reversal of 66348091 is 19084366.

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

It is a cyclic number.

It is not a de Polignac number, because 66348091 - 2¹ = 66348089 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 66348091.

It is not an unprimeable number, because it can be changed into a prime (66348691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12186 + ... + 16768.

It is an arithmetic number, because the mean of its divisors is an integer number (8581248).

Almost surely, 2^66348091 is an apocalyptic number.

66348091 is a deficient number, since it is larger than the sum of its proper divisors (2301893).

66348091 is a wasteful number, since it uses less digits than its factorization.

66348091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5081.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 66348091 is about 8145.4337514954. The cubic root of 66348091 is about 404.8332209706.

The spelling of 66348091 in words is "sixty-six million, three hundred forty-eight thousand, ninety-one".