66349305 has 24 divisors (see below), whose sum is σ = 125461440. Its totient is φ = 32169120.

The previous prime is 66349279. The next prime is 66349337. The reversal of 66349305 is 50394366.

66349305 is a `hidden beast` number, since 6 + 6 + 349 + 305 = 666.

It is not a de Polignac number, because 66349305 - 2¹⁹ = 65825017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66349305.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66525 + ... + 67514.

It is an arithmetic number, because the mean of its divisors is an integer number (5227560).

Almost surely, 2^66349305 is an apocalyptic number.

It is an amenable number.

66349305 is a deficient number, since it is larger than the sum of its proper divisors (59112135).

66349305 is a wasteful number, since it uses less digits than its factorization.

66349305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134061 (or 134058 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 66349305 is about 8145.5082714340. The cubic root of 66349305 is about 404.8356900923.

The spelling of 66349305 in words is "sixty-six million, three hundred forty-nine thousand, three hundred five".